Rina and Aoi are a pair of identically dressed girls who become influentially popular in Harajuku. Through the kind favors of suspicious talent broker they appear in a music video, but afterwards, it is only Rina who is recruited by a talent agency.
The body of Kazuyoshi Kawagishi, a construction company worker, is discovered stabbed to death in Shinjuku Central Park in Tokyo. Detective Masanao Ushio of Shinjuku West PD begins an investigation and finds that the murdered Kawagishi was an honest person who didn't have any troubles. Kawagishi worked for a company in Kofu City in Yamanashi, leaving behind his wife and daughter on Awaji Island in Hyogo. He seems to have started working as a laborer 3 years ago, having fallen on hard times when the company went bankrupt. Saeko Kawamura, Ushio's reporter friend, calls him wanting to talk about the case. According to Saeko, Kawagishi was one of the survivors of the "bus hijack arson case" that happened three years ago. In the bus hijack arson case, a man who was hallucinating under the influence of dangerous drugs set fire to an intercity bus going to Shinjuku and departing from Kofu Station...
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.
Hayato, a boy in the 6th grade, hides the secret that he can't swim. Every summer, he pretends to be sick, so he could avoid school swimming tournaments. But, as it is the last year in the elementary school, he can't escape from swimming practice and is forced to participate.
Rei, whose undercover role is so guarded that there is no written record of her identity, is well known for her accuracy in completing missions and her willingness to get naked if the situation calls for it. When she's instructed to bust Kayama, who has been buying confiscated drugs from corrupt police officers, she finds herself in a sticky situation -- not only is she attracted to him, but Kayama, like Rei, does not officially exist.
