The popular member of the idol group "Ririkarutrikku", Arika Mamiya, suddenly went missing one day. Even after a year, there were no leads to solve the mystery, and in the midst of this, "RiriTori" announced the holding of auditions for the third generation members to boost the group's popularity. Among the candidates, there was one who stood out with her blonde hair, Nanami Miyajima. In reality, she was Arika's close friend who had infiltrated the group to investigate the mystery of the incident. This is a suspenseful entertainment story that delves into the light and darkness of the "idol" world, brought to you by Moyashi Fujisawa of "Mitaira-ke, Enjou suru" and the new talent who won the Chiba Tetsuya Award!