Haruka Asana is a young detective in the The Tokyo Metropolitan Police. She's joined by Detective Wakana, who received her anti-spy terrorist training in America. Together, they foil international conspiracies that threaten the safety of the free world! In Beach VolleyBall Detectives, they learn of a group of terrorists who plot to set off a nuclear device in Tokyo. The terrorists are posing as hot female volleyball players and participating in the world beach volleyball championships in Tokyo. Haruka and Wakana must wear their bikinis and pose as beach volleyball players, in an attempt to apprehend the terrorists and save the world!