Luis is the only survivor of an attack by bandits on his boarding school. Chaos rocks the Mexican countryside during the 1910 revolution, and the boy is happy to have survived. Before he can get away and head towards home, he encounters another group of bandits. These are pre-teens who scavenge places looted by adult bandits. Thinking that by joining them his chances of returning home will be better, Luis' arrival makes the group a quartet. They soon become fast friends, bound together by their many adventures and their need to fend off the lethal bullying of the adult bandits, in particular the gang led by the sadistic Cacho. Before long, the kid bandits are wreaking havoc in the countryside all on their own.