Shining Sound begins by showing a young man named Joo Hyun-sung who is a person with a disability.
Hyun-sung is deaf. However, other people will not immediately know that he is deaf
because he can tell what other people are saying by reading lip movements,
making it easier for him to communicate normally with the people around him.
Hyung-sung, who is interested in bowling, wants to set up a bowling club at his school.
The scene then switches and shows a famous girl group named 'Girl Star' holding a concert.
Girl Star has four members. But the most popular are Lee Soo-ah and Ellie.
One day, when Hyun-sung was walking with his best friend, Yoon-jung, they saw Lee Soo-ah's large
banner in front of a clothing store. Yoon-jung, who is a big fan of Soo-ah, seems so fascinated
by her beauty, even though it's only a picture. But not so with Hyun-sung who prefers Ellie.
When Yoo-jung was busy looking at Lee Soo-ah's banner, a man suddenly appeared who stole the
banner and rushed away. The shop owner man who saw the incident, immediately rushed
out and chased the thief. Yoon-jung who was also there then volunteered to help catch the thief.
Long story short, they didn't catch the thief. But manages to get Soo-ah's banner back,
although it's a little torn at the edges. Because he thinks it's broken,
the man who owns the shop then gives the banner to Yoon-jung, who, of course, is overjoyed.
Meanwhile elsewhere, Soo-ah is seen who just finished an interview session at a radio station.
After that, the radio DJs asked Soo-ah about the bad rumours circulating about her.
They tell Soo-ah that Ellie is the one who spread the bad rumours. However,
Soo-ah denies all the bad rumours about her and insists that she and Ellie are good friends,
so Ellie can't possibly cause bad rumours about her. In the evening, Soo-ah hangs out with the
Girl Star members and their manager. Everyone seemed happy because their concert was a success.
But Soo-ah looks irritated instead. She then tells them that she is going on hiatus for a
while and wants to continue her studies. Hearing this, the manager and the Girl Star members look
surprised that she decided without consulting them first. However, Soo-ah's decision was unanimous,
so the manager and Girl Star members couldn't stop her from wanting to go back to school.
A few days later, a group of people wearing pink coats were seen in front of a building.
They claimed to be big fans of Ellie, and brought a poster of her. Hyun-sung who was about to go to
school accidentally passed them. Out of curiosity and hoping to see Ellie, Hyun-sung decided to wait
in front of the building. Shortly after, Soo-ah came out of the building wearing a school uniform.
Seeing Soo-ah's appearance, the group of people wearing pink coats
then threw eggs at her while calling her a bully because she often made Ellie difficult.
Soo-ah tries to protect herself and accidentally looks at Hyun-sung who is wearing the same school
uniform as her. Soo-ah notices the name tag on Hyun-sung's uniform and finds out his name.
Shortly afterwards, Ellie and their manager came there and immediately kicked them out.
Ellie then gave a doll to Soo-ah as a gift. But Soo-ah instead threw the doll
because she thought that the people who threw eggs at her were Ellie's orders.
Soo-ah also thought that it was Ellie who had spread bad rumours about her.
Once there, Soo-ah begs her teacher to be placed in Hyun-sung's class,
and confesses that she knows him. Soo-ah immediately becomes the most
popular student at the school because of her title as the most famous Girl Star member.
Everyone seems to admire Soo-ah, especially the male students who are crazy about her beauty.
While in class, Soo-ah immediately approached Hyun-sung, and tried to be friendly with him.
Hyun-sung suddenly felt surprised when one of the most popular members of Girl Star asked him
to get acquainted. Yoon-jung, who happens to be in the same class, then tells Soo-ah that
he is a big fan of her, while Hyun-sung is a big fan of Ellie. Yoon-jung then shows Soo-ah
Ellie's wallpaper on Hyun-sung's cell phone. However, Soo-ah doesn't seem to mind this.
While taking class lessons, she asks Hyun-sung for pencils because she forgot to bring them.
Hyun-sung happily gives the contents of his pencil to her.
When she came home from school, Soo-ah gave three boxes of pencils to express gratitude
because Hyun-sung had helped her. Yoon-jung and his friends tell Soo-ah that Hyun-sung is deaf.
Soo-ah then asked her teacher about it. The teacher confirms that Hyun-sung had indeed had
a hearing loss since he had an accident when he was a child. However, Hyun-sung's mother taught
him to read someone's lip movements so that he could know what other people were talking about.
That's why Soo-ah doesn't realize that Hyun-sung is actually deaf.
Soo-ah then meets with Hyun-sung and Yoon-jung at the cafe to discuss schoolwork.
Since they are now classmates, Soo-ah then gives her cellphone number to Hyun-sung,
and asks him not to hesitate to contact her whenever he needs help. Soo-ah then takes a
selfie of herself using Hyun-sung's cellphone and replaces Ellie's wallpaper with her selfie photo.
After finishing their schoolwork, they went bowling. Hyun-sung then shows his
ability to play bowling, making Soo-ah flabbergasted. After that, Soo-ah helps
Hyun-sung work part-time at the bowling alley and stays with him until the evening.
That night when at home, Hyun-sung looks radiant, remembering his moments with Soo-ah. He then told
his mother about Soo-ah. Hyun-sung said that Soo-ah is a member of the popular Girl Star,
but she is very friendly and kind to him. Knowing that her son has a good
friend and cares for him after learning of his condition, Hyun-sung's mother feels very happy.
One day, Hyun-sung invites Soo-ah to his house to do group work together. Soo-ah meets Hyun-sung's
mother and greets her politely. Hyun-sung's mother also welcomed Soo-ah in a friendly manner.
When Hyun-sung's mother went to the supermarket and Hyun-sung was in the kitchen making drinks,
Soo-ah then rummaged through all the drawers and cupboards in Hyun-sung's room,
hoping to find evidence of his involvement with the group of rabid Ellie fans who threw her with
eggs some time ago. Soo-ah apparently thinks that Hyun-sung is involved with the fanatical
group of fans and intends to find information about them. But she finds nothing there.
When Soo-ah is eating with Hyun-sung and his mother, Hyun-sung tells her that he
really likes bowling and intends to set up a bowling club at school to have fun
with his friends by bowling together. In their conversation, Hyun-sung's mother told
Hyun-sung that one of their relatives needed labour assistance in the context of building
a foundation. Hearing this, Soo-ah volunteered to help make the foundation. Long story short,
Soo-ah and Hyun-sung participate in mutual cooperation to help build the foundation.
Hyun-sung's mother realizes that Hyun-sung is attracted to the beautiful and kind Soo-ah.
While they were having lunch together, Soo-ah openly asked about Ellie's rabid fan group,
who threw eggs at her the other day. Hyun-sung knows that, but he vehemently denies being
part of them. Hyun-sung happened to be there on his way to school.
After confirming firsthand that Hyun-sung was not involved with the fanatical group
of Ellie's fans who humiliated her some time ago, Soo-ah immediately felt hopeless because
of her efforts to uncover the mastermind who spread bad rumours about her had been in vain.
Knowing that Soo-ah was carrying out public activities without the knowledge of management
and the agency, the manager then rushed to her to the place. Seeing the closeness of Soo-ah
and Hyun-sung, the manager got the wrong idea and thought that Soo-ah was dating Hyun-sung. However,
Soo-ah then denied this and told the manager that Hyun-sung was nothing to her and he was a deaf
person. Hyun-sung, who understands Soo-ah's words to her manager, looks sad and disappointed because
she never really thought of him as a friend. Hyun-sung's mother then came to see Soo-ah
and her manager and then asked her to just go home because she had helped them a lot. Before leaving,
Soo-ah then approached Hyun-sung to say goodbye. However, Hyun-sung who was already disappointed,
then said that Soo-ah was only friends with him because she wanted to find information about
Ellie's fanatical group who had humiliated her in public. Soo-ah who feels guilty, can't deny
Hyun-sung's words because it's all true. Soo-ah, who could not say anything else, chose to leave.
After that, Hyun-sung's mother took Hyun-sung to a place, where he then told his mother that his
judgment of Soo-ah had been wrong all this time. It turns out that Soo-ah never really wanted to be
friends with him. Hyun-sung's mother then tells her son that Soo-ah is actually a nice girl,
and it's only natural for her to find out about the people who have mistreated her.
His mother also questioned why Hyun-sung didn't help Soo-ah when she was being stoned with eggs.
A few days later, a man approaches Soo-ah to offer her a chance to go solo. The man turns out to be
one of the directors of an agency company that wants to recruit her to be one of its artists.
The man promises a brilliant career if Soo-ah is willing to leave Girl Star and her agency and go
solo at her company. He then told Soo-ah about the rumours about her leaving Girl Star due to
her dispute with Ellie. Hearing this, Soo-ah looks very surprised because she didn't know
about the rumours at all. Moreover, she also has no intention of leaving Girl Star soon.
However, because of the rumors, Soo-ah assumed that the party wanted her to leave Girl Star.
Since that incident, Soo-ah and Hyun-sung never again greeted each other when they met at school.
When Hyun-sung saw the pamphlet about the plan to form a bowling club at the school,
he was immediately interested and rushed there.
Seeing Hyun-sung who was very enthusiastic, Soo-ah was then interested in registering.
Unexpectedly, the male students who like Soo-ah, then join in joining the bowling club.
After realizing that most of the people who come to the bowling club are fans of Soo-ah
and only come there because they want to be close to her, Hyun-sung gets irritated
and leaves. Hyun-sung and Soo-ah got into an argument before Hyun-sung finally left her.
When he came home from school, Hyun-sung accidentally met again with a group of people
wearing pink coats. He tries to read the lips of one of them to find out what they're up to.
When the men finally left, Hyun-sung then followed them somewhere. They turned out to come to Soo-ah
who was alone, then again threw eggs at her while throwing hate speech. This time, Hyun-sung did not
stay silent and immediately rushed to help Soo-ah by protecting her from the egg being thrown. After
the incident, Soo-ah and Hyun-sung came home from school together, where Soo-ah then left in a taxi.
Soo-ah goes to see Ellie to say that this might be the end of Girl Star.
Ellie didn't deny or confirm anything because Soo-ah definitely
wouldn't believe every word she said and believed the rumours circulating more.
Meanwhile, Hyun-sung who was walking home accidentally saw a man who was
the group leader that threw eggs at Soo-ah, talking to a middle-aged man. The man turns
out to be the director of an agency company who wants to recruit Soo-ah
and persuade her to go solo. The director noticed Hyun-sung was there and then threatened him.
However, Hyun-sung pretends not to understand and tells the director that he is deaf and shows his
disability card. After learning that Hyun-sung was deaf, the director was relieved and left there.
Unbeknownst to the director, Hyun-sung had been recording their conversation secretly.
Unable to hear, Hyun-sung then sent the recording to Yoon-jung and asked him to tell the contents of
their conversation. Hyun-sung finally learns that the director hired a group of people to pretend to
be fanatical fans of Ellie and corner Soo-ah in public through that conversation. In addition,
the director spread bad rumors about Soo-ah, who wanted her to leave Girl Star and join his agency.
Shortly afterwards, Hyun-sung reunited with Soo-ah, where Soo-ah told him that Girl Star
was over. Hyun-sung then asked Soo-ah not to leave Girl Star and not to believe the
bad rumours circulating about her and Ellie's relationship. Hyun-sung then advises Soo-ah to
trust her own friends more than others who just want to bring her and Girl Star down. Hyun-sung
purposely didn't tell her about the director's conversation so that she realized for herself
how important friendship was between her and Ellie. Hearing Hyun-sung's words,
Soo-ah thought back to her past with Ellie who was kind and very caring to her.
Shortly after, Hyun-sung and Yoon-jung were seen with some of their friends at
the Girl Star concert location. At the end of the concert, Soo-ah introduced their new song to fans.
She also directly thanked Hyun-sung because he encouraged her so that Girl Star did not disband.
Soo-ah is also grateful that Hyun-sung has taught her about the meaning of friendship and always
follows her heart, without the need to listen to other people's words who just want to see us fall.
She also congratulates Hyun-sung on becoming a songwriter.
The moral that can be learned from this movie is not to easily believe the rumors
circulating there until we hear directly from the person concerned. In addition, this film
also shows the love of a mother who struggles so that her son can learn to read someone's
lip movements so that he can live normally and mingle with the people around him.