Momo and Kirari are schoolgirls living a boring life in a rural town in northern Kanto. They use their summer vacation to visit the apartment of Mochizuki, a man living in Tokyo whom they met on social media. Mochizuki and Kuga, who claims to be his best friend, steal Momo and Kirari's Kokoro, but it turns out to be a cruel trap. Mochizuki is a candidate for executive position in the yakuza organization whose uncle is the boss, and he has invited the two to lure them into various underground sex trades. Falling right into their trap, the two spend a hellish summer vacation...