Minori Oyamada, a put-upon editor at a travel-guide publishing company, is asked by an old friend to plan her forthcoming wedding party in Hawaii. After persuading her boss that it will be a work trip, Minori departs for Hawaii with the intention to find and marry a rich man. But when Minori arrives, she encounters three different men who complicate her original goal...
A man’s body is found in the suburbs of Tokyo. The dead man was hit by a car and his head beaten by the reckless driver after the accident. The dead man had a wife named Noriko. She likes fancy things and she has a lover named Tsukada. It's also learned that the dead man was insured for 300 million yen. The media and the public look at Noriko and her boyfriend Tsukada with suspicion, but they have perfect alibis. Then, Detective Hibiki, who is in charge of the case, and Private Detective Kono become involved in a series of mysterious murder cases.
Amateur photographer Makoto and the homely but endearing Shizuru meet during their university entrance ceremony and become instant friends. Shy by nature, Makoto finds himself opening up around Shizuru, who is secretly in love with him.
Guitarist Ko-chan is a mess of sexual repression after a childhood at the mercy of two elder sisters eager to use him as a guinea pig for their make-up skills. Bassist Gaku-chan keeps a bucket in the wings for whenever his nerves get the better of him, and drummer Momo-chan is doomed to forever carrying the botched childhood attempts at self-tattooing. It's not until this foursome is forced to look for an additional guitar player after Jin's dad burns his Stratocaster, that attitude and musical ability enter into the equation. Leather-clad, shade-wearing Tani (Tamaki), inseparable from his black Les Paul, is introduced as the king of R'n'R cool and Jinnai keeps him firmly seated on his throne throughout the film, retroactively proclaiming the guitarist, rather than himself, as the band's true hero.
When social worker Rika is sent to check on a traumatized old lady whose family have moved in at the site of the notorious Saeki family murder case, she unwittingly unleashes a cycle of terror that is transmitted via its victims further and further from its original source.