Toshio goes undercover during an exhibit of famous paintings sponsored by department store tycoon Gosuke Yabuki, but his cover is blown when Ai appears and questions the authenticity of the exhibits. The Chief brings Toshio over to Yabuki's house to offer an apology, where Toshio discovers a spiked armor for Dobermans but is attacked and has to be hospitalized before discovering more. Ai is sent to Yabuki's house as an advance party while Hitomi and Rui guard Toshio at the hospital. But dodging murderous Dobermans and stealing the "Goddess of Mars" are not the only issues Cat's Eye has to resolve in this case.