A sequel to the 1980 movie The Legend of the Stardust Brothers. As well as being a rock musical comedy, it also borrows elements from other genres such as road movies, westerns, and meta fiction.
Tetsuo Togami is in the 2nd grade of high school. Due to a fight, he is hospitalized. There, he meets Maiko Takashiro. She has an incurable disease. She also has a hearing disability and is unable to talk. At first, Tetsuo becomes embarrassed but begins exchanging text messages with Maiko. Through the text messages, he begins having feelings for her. Even after his discharge from the hospital, he goes to visit Maiko every day. They promise to go out together on Maiko's birthday, but her condition worsens.
One day, Hikojiro receives an emergency call from inn proprietress Shino Ogawa to examine Tadahiko Mori, a guest complaining of stomach pain. Mori, who owns an art gallery in Tokyo, has come to Kyoto on a trip with his only daughter, high school student Nanami. Hikojiro gives him his business card, telling him to contact him if the pain comes back. However, the next day, Mori is found dead...!
There is an old love hotel in Tokyo's Shinjuku district where couples can rent a room by the hour for romantic assignations. However, few of its regular customers seem to come there for sexual encounters; the hotel has become a hangout for rootless teenagers, senior citizens looking for a place to relax, and kids that play under the watchful eye of its owner...