A young girl named Alice is heading home by car with her boyfriend K on a dark spring night, but K decides to stop in the middle of the forest, where they share a strange sexual experience. Afterwards, K tells Alice to head to a nearby mansion, which he says is owned by his friend. K says he will join her afterwards.

Alice finds the mansion and its inhabitants: a masked man and five girls. Why are they living here? What is their relationship with each other? Alice will have time to find out as she waits for her boyfriend to come.