In a future Boston, a passenger train disappears from a subway system so complex the system creates a second dimension. Government officials work to retrieve the missing car, but struggle to solve the impossible mathematic equations the system created.

A young man gets a job working the graveyard shift at a local burger place and realizes that several of the costumers who come at night are from parallel universes. He plots to escape his world and travel across all the other universes, but there's a catch—once he leaves his home universe, he can never go back.

A mathematician tries to convince his machinist friend to travel through time with him, leading to a heated discussion of man’s hubris and the possible paradoxes that could open up if they disturb the time-space continuum.

A woman tries to understand the space-time continuum and his love.

While waiting for an unrequited love to return, an elderly woman ruminates on her role in discovering an elegant alien technology. She feels death approaching and regrets not seeing her love again before she passes—only for him to arrive in the nick of time.

A family goes on a ride that allows them to see their entire future.

A stranger from the faraway future appears in a young man's room in 1952 with an urgent mission.

A young man struggles to rationalize with fate as he watches the people he loves experience immense pain and suffering. As he learns more about the physics of the universe and slowly teaches himself how to travel through time, he begins experiencing surreal moments where he can actually see the alternative paths he and his loved ones could have taken, and how they would all have been different if they had.

A man who can travel through time and space finds himself a houseguest in the distant future.

In the far future, an invention called "the prism" uses quantum mechanics to cause divergences in future timelines and create a means of communication across these alternate realities. Two different women explore the choices they have made in their own lives and the regrets they harbor--and have to figure out how to ultimately make peace with their decisions.