High School student Miyui Mashio is really struggling. She can't fulfill her dream of becoming an idol and her parents are always fighting. Suddenly, she finds a genie in a bottle and through an accident, finds herself back in 1991. She realizes she is now going to school with her parents. But the problem is, her parents do not seem to get along - so Miyui will never be born! Miyui learns her father is interested in idols and so together with her mother and other girls she forms the idol group AGS16 to make sure her parents will eventually fall in love.
