Michiko a high school girl had committed suicide, but she was resuscitated by an alien parasitism. While she brutally murdered men and spawned one after another, her friend Rika met Mayumi. Mayumi was told that she was parasitized by a gentle alien. They decided to fight Michiko.
Aya (Mizuho Hata), an 18-year-old girl who hangs out in Shibuya, lightheartedly dabbles in a drug called "Tama". She meets Naoya (Yusaku Yonemitsu) at a club and becomes friends with him, but one day she is raped by a group of men who pick her up. The shock of this leads her to abuse the drug even more, and she spends her days in disarray.
Takase works part-time as a motorcycle courier but plans to switch jobs the next day to become a drug courier with his friend Kono. His final delivery is to pick up original illustrations from an artist named Nana and deliver them to her publisher. However, when Takase arrives at the designated time, the illustrations aren't ready, forcing him to wait around for hours. The artwork is finally completed late at night. With the job done at last, Takase decides to go out for drinks with Nana. Just then, Kono joins them, and the three of them head out into the night.