Overview:
Sin Nombre (which Wikipedia tells us is Spanish for “without name”) tells the story of Willy (aka Casper, played by Edgar Flores), a teenage member of a ruthless Mexican gang. Quickly after he helps initiate a pre-teen named Smiley into his inner-circle, a personal secret Casper has been hiding is exposed, and he is abruptly betrayed by gang leader Lil’ Mago.
Shortly after, Mago, Casper and Smiley attempt to rob a train containing migrants attempting to immigrate to America. Still stinging from the betrayal, Casper takes revenge on Mago and sends Smiley away while he stays behind on the train in hopes of escaping. While hiding out from his revenge-seeking gang members, he befriends a girl named Sayra (Paulina Gaitán) who is attempting to escape to America with her family.