About the title
A soldier named Colter mysteriously finds himself in the body of an unknown man who died in a train crash. Colter is forced to relive someone else's death over and over until he figures out who caused the disaster. He has the ability to travel into a person's body a few minutes before their death, a power used to try to prevent disasters and terrorist attacks. But what happens to the man himself, who relives someone else's death again and again? Source Code is a film for anyone who won't get off at the next stop.