PI

Fei, Jia, Min and Suzy are a group of girl spies, working under XXX Group. Key, Minho, Jonghyun, Taemin and Onew are boy spies also under XXX Group. Not surprisingly, both groups never met each other. But when a famous K-Pop idol gets stalked and threatened by a serial killer, the two groups are joined together to protect the idol and solve the case.