The members of the Pretty Boy Detective Club: Manabu Sotoin, Nagahiro Sakiguchi, Michiru Fukuroi, Hyota Ashikaga, and Sosaku Yubiwa, along with Mayumi Dojima, visit the location where she saw the lost star ten years ago. The deadline imposed by her parents to stop searching for the star is quickly approaching. Meanwhile, she finds herself being tailed by a shadowy figure! She escapes from its evil clutches only to be told a shocking truth from the Pretty Boy Detective Club...
