The first episode will focus on the past between Kogorou Akechi and the Fiend With Twenty Faces, while the second will focus on the Boy Detectives Club before Kobayashi and Hanazaki met.

Two weeks before a concert at Yaon Hibiya auditorium (1987.8.26), while playing at the club Shinjuku Loft, lead vocalist To-Y (pron: to-o-i) of the band GASP is jumped by a rival, Aikawa Yoji. GASP is a upcoming band known for its violence, struggling to be noticed against the popularity of hotshot Aikawa, who's #1 on the charts and beloved by his fans. The Yaon Hibiya concert represents GASP's mainstream debut to break out of the small-time club scene, which is threatened by the schemes of Aikawa's manager, Ms. Kato of Koyama Productions. Kato wants To-Y to leave that "bunch of hoodlums," and sing independently for a major label. Adding to the confusion is an unexplained character who manifests feline traits, named Niya. Niya presents herself as "To-Y's aijin" ("Niya, To-Y no aijin da yo!") to the consternation of Koishikawa Hiderou, who has interest in To-Y. Koishikawa, also known as "Sonoko-chan," is typed as a "okama" by Niya. A running motif is GASP, it's fans, and associates regarded as unusual by the mainstream public, as exemplified by their musical taste, dress, and Classic Coke-drinking, which only contributes to more difficulty in their struggle to be accepted.

The story revolves around a girl named Yuuka, who encounters a being from the depths of the Earth named Chii-chan (a pun of chiteijin, the Japanese word for underground-dweller), and an alien named Ucchan (a pun of uchuujin or alien). The story follows their heartwarming and chaotic everyday lives together.

Special based on the manga by Ooya Kazumi, published in Betsukomi Flower Comics. An all-male pop group doubles as a detective agency. The cute girl member of the agency is kidnapped when one of the men's past returns to trouble them all in the present.