A young teenage boy with a zest for sports and singing is seriously injured in a motorcycle accident. The story revolves around his shock at the way his life has changed and his difficulty in coping with his new reality. The boy, played by Latin singing star Luis Miguel at age 14, sings several songs in the movie.
Tancredo, a poor man, is in love with a rich girl, who does not return his feelings. One day when she is bathing in a river, a flood sweeps her away and Tancredo is unable to save her. Mad with grief, he steals the sun. The gods call Apolinar to restore light to the earth, but he is obstructed by the magician of darkness, until by means of a telescope he is able to send a bag of light to Tancredo, now grown old. Tancredo goes to the seashore and opens the bag of light as an offering to his beloved, whereupon the sun returns to the earth.
In the late 1800's, Boris Karloff has discovered a way to use nuclear power. He creates a beam weapon and blows up a big rock. Outer space aliens are scared and one alien who looks a lot like James Cameron with a big fake nose only this one isn't fake lands and brings other aliens who take over the bodies of Karloff and his assistant. The assistant is a Jack the Ripper style killer who has done a few nasty murders which have riled the townsfolk. The body-snatched bodies become radioactive and start killing flowers and other stuff (but don't die themselves) and some stuff happens and in the end Karloff destroys the beam weapon equipment (and his lab and house), then the aliens leave and warn us that if anyone ever does it again there will be trouble.
During the Mexican Revolution, a hardened and rich lady landowner is overtaken by the violence of the times. Losing her land and house, she falls in love with a revolutionary leader that is killed by a sadistic and corrupt federal officer. She takes the revolutionary flag and leads a rampage of violence and destruction.
Fando and his partially paralyzed lover Lis search for the mythical city of Tar. Based on Jodorowsky's memories of a play by surrealist Fernando Arrabal.