On July 27th, university student Aoi Hinata has an accident. When she wakes up, Aoi Hinata finds herself in a classroom from one week before the accident.

College student Sota picks up a cassette tape left behind by musician Aki when he died a year ago. When the tape is played back, Aki takes over Sota's body for just 30 minutes. They share the same body and rush to reunite a band that split up and bring a smile to Aki's girlfriend Kana's face.