The Vegetable Monster survived the shot fired at the end of Part 1. Wounded, he is saved by a shy veterinarian who is abused by the rude colonists of southern Brazil, and who will use the alien plant creature as an instrument of revenge.
A punk scientist formed the formula of the deadly drink that transforms drunks into hallucinated zombies and awakens the fury of Little Red Riding Hood's grandmother and her afternoon tea buddies, who armed and dangerous decide to get revenge.
It was supposed to be a romantic afternoon on a “deserted” island in the Uruguay River, but a couple of wealthy ecologists had a bad luck because they ended up finding not love and peace, but hungry zombies wanting guts and brains under the command of a priestess. diabolical, and this couple will have to fight for their survival in that place. Parallel to this, a serial killer dressed as an old lady drags a "blonde" from the city to her isolated shed to serve as a victim in her sadistic tortures.
Earthlings are at war with an alien race of arachnids.
Dr. Karloff prisons an alien from the Leguminous Planet and calls his friend Dr. Marins to help him in his experiences, because the Leguminous Monster is an anarchist intellectual full of hate against the human beings. While the scientists discuss about the monster, Caquinha is convinced for him to let him go. Done that, the Monster kills the scientists and kills everyone he finds in his way.
The day after the carnage initiated by the Martian scientist, a fleet of spacecraft from Mars is called upon to invade Earth, but Dr. Rottenberg's plans are hampered by two NASA officials, Detective Johnson and Dr. Nagib, called in to investigate. the case.