This game is the continuation to the Chu×Chu Idol series, consisting of a main story and an if story. In the main story, the now popular idol ChuChu is preparing for her new concert when three people showed up from the future, including the main heroine of Chu×Chu Idol 2, Chuuno! The two mysterious people with her had stolen Chuuno’s ‘songs’ and travelled to the past to take ChuChu’s too! After snatching her ‘songs’, they disappeared off to somewhere. Will the two vampire idols be able to regain what they have lost? In the if story, Daigo is left behind when Chuuno is taken to the past. Gradually the space-time begins to bend and so does the future. However, he finds out a way to fix it.