Kaguya Yuki is an ex-member of the idol group Kirakira * Moon. Set up by the other members who were jealous of her popularity, Yuki was banished from the entertainment world. She vows to make a come-back to take revenge against Kira * Moon!! …But for some reason, she ended up becoming a member of the male idol group ZAST as a new male member, Fuyutsuki Kaguya...!?