On an isolated island outside Montreal, there is an apartment complex called Starliner, which is an extremely modern and ideal residence, but in this heavenly building, a middle-aged scientist named Hobbes is beating a young female student unconscious with extreme brutality, then opens up the student, destroys his internal organs with concentrated hydrochloric acid, and then kills himself. Through investigation and research, a doctor found that Hobbs was working on a kind of masculine parasite, and he used the girl's internal organs to cultivate the parasite, but he found something wrong with his research. he decided to kill the girl and himself, but Hobbes did not find that this girl was actually a very complex and chaotic source of infection. One by one, the people in the building were infected by this parasite that looks like female genitals, turned into bloodthirsty walking corpses, and then went crazy. Soon, they stepped out of Starliner and went outside in search of new prey.