Physicist Jason Dessen goes over his teen-age son Charlie's math homework with him.

The Dessen family is headed out for the day.

Jason lets Charlie drive and Charlie nearly runs a red light.

Jason's coworker Ryan calls to tell Jason he won the Pavia Award, which Jason had been hoping to receive.

Jason attempts to explain Schrodinger's Cat to his class of disinterested students at Lakemont College.

Daniela, a gallery owner, is training for a triathlon.

Jason opens a storage unit where he has an experiment set up.

Jason is blowing off Ryan's celebration but Daniela encourages him to go.

Ryan invites Jason to join his multimillion-dollar neurotech company. But he'd have to move to San Francisco.

A tipsy Jason almost gets run down on his walk home.

Then he gets held up and shoved into a car by a masked man, who calls him by name, and makes him drive.

He also knows Ryan and the passcode to Jason's phone.

After having Jason stop at an abandoned warehouse, he makes him strip and hands him a flashlight.

They grapple, with Jason falling down stairs before he gets injected with something that knocks him out.

The man asked him if he's happy with his life or if he would make changes if he could.

Jason wakes up to find himself being treated by men in hazmat suits.

The next time he awakes, he's in a locked room.

Eventually, the door is unlocked by an unfamiliar woman, who rushes in and hugs him.

The woman, Amanda, tells him he's been cleared from quarantine.

She takes him to see Leighton, who he does recognize.

Leighton explains to Jason that he's cofounder and chief science officer of the place he's in.

Jason was the only person who returned and he'd been gone for more than 14 months.

He runs and tries to escape even though he has no idea where he is.

A unknowing security guard lets him out of the building. He scales a fence and runs into the nearby city, jumping in front of a cab to stop it.

He's dropped at his house, only to learn that Amanda lives there.

The man sheds his mask and goes to Jason's home. He's also Jason.

He brought ice cream for Daniela, who's angry because he wouldn't answer her calls and texts.

She can tell there's something off about him.

He informs her about Ryan's job offer.

He convinces her to forgive him.

Amanda lives with the other Jason and they have no children. He won the Pavia Prize.

He tells Amanda that Daniela is his wife.

 He runs after security forces show up while the other Jason goes to bed with Daniela.