El Caspar (Edgar M. Flores) is a member of a Mexican gang, but he is quickly growing tired of the life. He has just helped initiate the gang's newest member, and his girlfriend has been murdered by the leader. When he turns on his friends, he ends up with a group of illegal immigrants on a train heading North towards America. One of these is Sayra (Paulina Gaiton), a teenage girl who takes an immediate liking to El Caspar. He knows he is going to be caught and killed by the gang, and he doesn't want her caught in the crossfire.