In the year 2074, the mob sends problem people back in time to 2034, where a hired gun waits to eliminate them. Joe is one such hired gun, good at what he does. But problems arise when the mob tries to 'close the loop,' and Joe comes face-to-face with his future self during a hit. When Joe's future self escapes after he hesitates to finish the assignment, Joe must chase himself down and finish the job.

Rachel is unemployed and devastated by a recent divorce. She fills her time with drinking, riding the commuter train, and fantasizing about a seemingly perfect couple the train passes by every day. Then one morning, Rachel sees something shocking that unravels her and entangles her in an unfolding mystery.