One day, without knowing how or why, the birds of a big city leave, disappear. It is believed to be a protest against environmental pollution. Some children (the Regaliz group), then embark on an ecological campaign to get the birds to return to the city.
Shmuck makes a superhero costume, rides his bike to crime scenes. He gets involved with something big involving US capitalists taking over local Mexican businesses.
Working-class dude grows up surrounded with petty delinquency and ghetto temptations; he marries a rich girl and faces the disapproval of her parents. Then the young couple plans a crime...
Inspired by a true story, Evelia, a Mexican migrant, becomes the only witness to the murders of the mysterious family she works for. She must make the decision of her life if she is to survive.