100 million years ago, an ecological disaster drove the Demon Beasts from our world. Now they must breed with human females to create a new, hybrid creature who will clear the way for an invading horde. When 19-year-old Kayo is raped by a possessed lover, it's up to 19-year-old Interplanetary Mutual Observation Agent Muneto to save her from the terrifying creature to which she gives birth: A mutant, lust-driven Demon Beast!
From the radioactive emptiness of space comes the Demon Beast! A hideous alien monster, the Beast shares a psychic link with the beautiful Earth woman, Kayo. Bound by a forbidden past and a horrifying erotic encounter, she is destined to lure the Beast back to a helpless Earth. Her tortured soul cries out across dimensions, calling the Demon Beast to begin his reign of bloodlust, carnage, and terror!