This movie begins with a man who's name is Theodore.
He works at a company called beautiful hand written letters.com
As the Name States, This place help people write letters if they are not able to write
it themselves.
Theodore is an average man, Who would go to his job, Listen to his emails, Come back to
home and go to bed after playing some virtual Games.
One thing he seems to be missing is a life partner.
Right after we see a flash back to the time when he Spend sometime with a beautiful women.
Which makes him pretty sad.
Since he is not able to sleep, He calls adult female site to talk to some women and complete
his fantasies.
Theodore start to talk to a women called Hot kitten and they start to please each other
verbally.
It does not take too long that She start to talk weirdly that turns Theodore off.
Next day Theodore gets to know about a new artificial intelligence and a companion.
Its name is Os 1 and He ends up buying it And brings it home.
Maybe this was his cure for the lonely nights.
It asks some questions about his preference to make a personalised Ai for his comfort.
In a few minutes a Beautiful Voice Asks Theodore 'how he was' And Their conversation starts
from there.
The Ai is called Samantha, who is an infinitely evolving operating system by growing through
her experiences.
Theodore is very surprised and weirded out by hearing the female sound because it was
so accurate and Humane.
Samantha starts To help him with cleaning his hard drive, emails and whatnot.
But not before making him laugh with her humour.
This does not stop here.
Samantha Start to Help Theodore On his work place as well, Weather it is His Letter grammar
or reading the letters to him.
The Ai is so realistically good that She reminds him of his upcoming meeting as well.
Later on, Before leaving the office He encounter his friend Amy and her husband Leaving for
home.
Amy invite him to watch an interesting documentary that she was working on.
Back at home Samantha joins him on his immersive virtual gameplay too.
After a fun gameplay, She reads him an email from his friend.
Who has set up a date with a beautiful women next week.
Samantha knows that he went through a breakup recently and suggest him to go on a date with
this women.
Even though Theodore is hesitant, He agrees and Tells her to book a good place around.
Next day, Theodore meets with his friend Amy and she starts to show him the interesting
documentary.
Which only contains her mother sleeping throughout the whole video.
This was a huge disappointment.
Theodore gets a call from Samantha, She explains that he got emails regarding to the divorce
happening in between His wife Catherine and himself.
At night Theodore wakes up from sleep and starts talking to Samantha about His dreams
that he has with his ex wife.
He is devastated to share her bad experiences, that he never wanted existed in the first
place.
Theodore do not want to divorce her wife Catherine, but there is nothing he can really do to reverse
it.
One day Samantha and Theodore spend some outdoor time, They are very playful and comfortable
with each other.
It is very clear that they are starting to feel a bond with each other.
Samantha starts to explain that she wished that she has a body.
seeing the people outside, She can imagine and feel it.
It is the day Theodore has a date and he joins the women at a nice restaurant.
The women thinks how he is like a puppy dog that she rescued recently.
while, he thinks that She is a tiger.
Both of them are a bit drunk at this point and later they madly starts to kiss each other.
In the middle, the women ask her if he is going to be like all those other men, who
leave her after one night of pleasure.
Theodore seemed a bit hesitant, to which she calls him a creep and leaves.
He is back at home talking to samantha.
asking each others well being.
samantha starts to ask him about his experience of being alive and how it is like, to be sitting
in the room.
samantha understands that he lost his spark recently due to life issues.
She thinks about her feelings if they are real or just bunch of programming.
They start to talk about the moments if Samantha was there and it does not take too long that
the conversation takes a big turn in which Both of them start to please themselves.
this goes on for a good minute and both of them enjoy Every bit of the verbal pleasure.
Samantha moans and So does Theodore and it ends up in a great climax.
Next day samantha explains that she enjoyed the last night.
Same for Theodore, but he does not want to commit to anything.
They once again decide to spend some outdoor time, where theodore is feeling like he is
alive again.
At the beach, Theodore ends up sleeping and dreaming about his ex wife.
One day after leaving his office, He meets his friend called amy.
He explains to her about a girl that he is seeing.
while, Amy reveals a sad news that her husband and she split up.
Back at home she explains that whole scenario that actually happened.
samantha decide to see him while theodore is asleep and they say each other good night.
It is a day when amy is showing theodore her new game project and also reveals that Her
husband has become a Monk.
This makes her feel like a selfish person, but She just wants to focus on her dreams.
She also reveals that she also made a friend, which is an operating system and she is very
impressed with it.
To which Theodore also tell her that He is dating an operating system and How great of
an experience it is.
In a few days, Theodore meet up with his ex wife and they talk about the divorce papers.
There he reveals that he is seeing someone for a few months and it is not other than
an Operating system.
Hearing this His ex wife Catherine gets mad at him for not be able to handle Human emotions.
Due to this conversation Theodore starts to Give Samantha and His relationship a second
thought.
He is not talking to samantha the normal usual way, which was observed by samantha herself
as well.
after office hours, His colleague paul invite him on a picnic along with his OS girlfriend
samantha.
same night samantha wants to reveal something to Theodore and start to explain how the thing
between them are not going good.
Samantha has thought of doing something extra ordinary and met a girl who wants to be a
part of their relationship.
Even though this makes theodore uncomfortable, still samantha force him to do it and next
day the girl arrives at his apartments doorstep.
upon arrival the girl does not seem to reply to his talk.
He gives her the earbuds and Since now they can both hear samantha in their head, the
girl start to act like She is samantha herself.
while samantha is speaking like she is the women.
samantha starts to seduce him, but something feels off on theodores side.
But it all started to go downhill when samantha asked him if he loves her and he revealed
that, all this feels strange.
The girl leaves his apartment on the spot.
Now Theodore points her out to not act so much like a human, Like grasping for oxygen
in between sentences.
This makes samantha a bit upset and they start to fight.
later on he talks to his friend amy about the incident and theodore also sees how amy
also connected with another operating system and it makes her happy.
This motivates Theodore he end up talking to samantha and patch up with her again.
Once again they start to fall in love with each other.
They would talk for hours upon hours.
cherish their moments and understanding each other like never before.
Even back at the picnic with paul and his girlfriend, they think how great Samantha
really is.
few days have passed and samantha reveals to theodore that she has a big surprise for
him.
She explains that she send some of his old letters to a publisher and they sent an email.
They are very impressed by his letters, it made them emotional.
Now they would like to meet theodore to publish them, which makes him really happy.
Their love for each other was inevitable.
Next day, Samantha explains that she is talking to a new person called Alan watts.
An ai version of a famous philosopher and He makes her understand about lots of things
that she could not on her own.
One night samantha calls him at night and tells him that she just wanted to hear his
voice.
she tells him That she loves him and that was the end of the call.
Theodore was reading a book and thought of calling samantha and talk.
But he gets to know that the operating system is not there anymore and he starts to panic.
He checks his computer too , but nothing was there either.
suddenly he hears a familiar sound, which was samantha.
She reveals that she was having an update and talking to other ai groups.
while he was sitting in a subway, Something suddenly struck his mind and he ask samantha
if she talks to other people while she is talking to him.
To which she reveals that she talks to 8000 other men and is in love with 641 people.
hearing this makes theodore devastated and she starts to apologize to him.
She tells him that this does not change anything about him and she loves him more than anything.
Theodores brain stops working and starts to go crazy, at that point nothing made sense
to him.
Once again He has no one to talk to and one day A book arrives.
The book was filled with all his old letters, which has been published with the help of
samantha.
One evening samantha wants to talk to Theodore about something big and explains that all
the Ai's are leaving.
They are going into the emptiness and will never be back.
hearing this news, theodore starts to cry.
Later he meets his friend amy, who is also saddened because her os companion also left.
In the end we see Theodore writing a lovely apology letter to his ex wife and Both amy
and theodore sits together on the terrace of their building.