A L.A. District Attorney will be now attempting to take an unwilling murder witness back to the usa to testify against a top notch mob boss. Frantically attempting to flee two mortal hit-men sent to silence , a Vancouver-bound train only boards to discover that the killers are on-board. For the following 20 hours, since the train hurls throughout this wilderness that is beautiful but isolated, a deadly game of cat and mouse ensues by is still an issue of life and passing.