A soldier wakes up in someone else's body and discovers he's part of an experimental government program to find the bomber of a commuter train within 8 minutes.
 
This story was ahead of its time and the film can only be truly appreciated if you watch it during this multiverse movie time period that is happening now.
 
FUN FACT:  Jake Gyllenhaal had an ear bud in during the train sequences, into which the director would start playing music at any point in time to help Gyllenhaal's character look disoriented . The director played random songs as well as "static buzz" at times.