Sayaka works at a office. She's not very good at her job or with love. One night, she finds a man, Itsuki, collapsed in front of her home. She takes him inside and they begin to live together. Itsuki teaches Sayaka about cooking wild herbs and collecting wild herbs, but he has a secret.
Dako is a con woman. She stays at a suite in a luxury hotel and schemes to take money from vicious wealthy people like yakuza bosses and evil businessmen. She works with Boku-chan and Richard. Boku-chan is a sincere and timid young con man. Richard is a veteran con man. Dako is able to master knowledge from various professions in a short period of time and disguises herself as someone working in that field. Along with Boku-chan and Richard, they carry their plans using fantastic teamwork.
High school student Azusa jumps off from the rooftop of a school building, but she survives. One month later, the school is taken over by group of people wearing bizarre masks. A pregnant teacher is imprisoned, while the head director of the school and male students disappear. Azusa then finds pieces of a puzzle in an envelope given to her by classmate Shigeo. The puzzle pieces holds the key to solve the case. Azusa chases after Shigeo and she sees something which is unimaginable.
