At a hot spring inn on a high school school trip, high school girls discover a bag full of money that a yakuza lover stole away. A hitman who appears to recover money, and a homeroom teacher who is begged by another student. A crime comedy set in a hot spring inn where multiple motives are entwined and chaos causes chaos.

News about the disappearance of panties is still being covered every day. Kyosuke still wears Aiko Completo's panties to battle evil. Meanwhile, Aiko has mixed emotions and decides to get her panties back. Kyosuke suffers from the loss of Aiko's panties and disappears, but his biggest enemy yet is about to materialise.

Misa Murai doesn't have it easy in life. She works as a screenwriter at a production company that specializes in horror films.