The episode starts with a drunk woman talking with a man in a park. She pulls out a few strands of hair from the guy who turns out to be a “parasite”, and she ends up being killed and eaten by him and another female parasite.
Meanwhile, Kana dreams that she is being chased and surrounded by a group of monsters but then Shinichi saves her. The following day, she waits for him on his way to school and he warns her again not to get so close to him and to stay out of danger. When Shinichi leaves her to talk to Migi, Kana meets Murano and the latter asks the former if she also senses any changes with Shinichi.
Another parasite which is disguised as a man gets out of the car and enters a building where the yakuza are gathered. He kills all of them as an experiment to test his limits against humans armored with guns and blades. After he escapes, he kidnaps another man from the group who try to chase him and uses his body as another disguise. He returns to the car with Kusano and drives off to go back to their boss. The news of the massacre reaches Shinichi who is perplexed with the real motive behind the killing.
Shinichi asks Murano out and the two go on a date. However, she still senses that something is different with him especially after the incident where Shinichi clutches his chest as he suddenly remembers his mom. After their date, he walks her home and they both share a kiss, and Kana witnesses the scene.
That night, she reprimands herself for setting her hopes too high even though she already knew from the start that Shinichi likes Murano. Nonetheless, she still calls him and asks him to meet her the next day. Shinichi complies since she told him that it would be the last favor she’ll ask. He arrives at their meeting place a little earlier when Migi informs him about the other parasites that it senses not far from their location. He tries to search for them and he accidentally makes an eye contact with Goto, the one who massacred the yakuza. Hirokawa Takeshi, the candidate running for the mayoral position, is with the other parasites on the platform, including two more below them. Migi advises Shinichi to get out of the area for the meantime since the others don’t seem to be interested in them. However, just as he is about to leave, Kana arrives and the situation gets even worse as the parasite sees them together.