Ai is diagnosed of temporary dissociative amnesia caused by an incident after stealing a painting with Hitomi. She also undergoes regression and develops pyrophobia. Rui, Hitomi and Toshio take her out for a drive hoping it would help in her recovery. As Ai struggles to regain her memory, it soon becomes clear that some unidentified men are after her life. When Ai finally regains her memory, the Kisugi sisters must work together to retrieve the painting and save a foreign politician from an assassination attempt.