El Mono, Maikel, Balde, Mafia, Mariano and Memo are six bricklayers who decide to appear in a beat band contest to fulfill their dream: dedicate themselves to music and barbecue. On the way to the contest, in which they are divided to fulfill different objectives (gather instruments, beat clothes, groupies, etc.), they will be caught in the most hilarious adventures in which they will be helped by strange characters.

When his pet is killed by a probe from earth, Mercano, a Martian, travels to earth angered. Landing in Buenos Aires, at first noone takes any notice of him.

A small town is the subject of some experiment with aliens where they were allowed to test some earth folks with some kind of disease, but of course it spread with disastrous results. And now, three oddballs have been dumped into the middle of this town as test subjects or something, and the race for survival is on. John West is a strongman, with a cowboy hat and leopard skin tights, Bill is a medical student, and Max is a mathematical genius, and it's them against the zombies.