Yukari Kawahara (Masami Nagasawa) operates at a drink producer. She strives as well as accomplishes recognition for her job. Yukari Kawahara is dating study medical professional Kippei Koide (Issei Takahashi). They have cohabited for 5 years. Eventually, Kippei Koide collapses from a mind hemorrhage. Yukari Kawahara quickly discovers that everything she knew about her boyfriend was a lie. She hires private investigator Takumi Kaibara (Kotaro Yoshida) to explore Kippei Koide.