The first U.S. mission to Venus crash-lands off the coast of Sicily, unknowingly bringing back a mysterious reptilian creature that rapidly grows to a monstrous size.
In 2020, after the colonization of the moon, three spaceships are launched from Lunar Station 7. They are to explore Venus under the command of Professor Hartman, but an asteroid collides and explodes Capella.
Seymour, a young florist at a struggling flower shop discovers that the unusual plant he’s been caring for has a terrifying thirst for blood, driving him to commit unspeakable acts to keep it fed.