While investigating the whereabouts of Tsuyoshi Shimomura (Teruyuki Kagawa), Kosaku Kuroda (Yuji Oda) finds himself in the middle of another murder. Someone kills Tsutomu Kashiwada (Ren Yagami), who had been threatening Rui Shimomura's (Kaho) friend, Yutaro Kimijima (Takahiro Nishijima). Kuroda and Rikako Ogaki (Ko Shibasaki), who were at the scene after the murder, become increasingly scrutinized by their respective departments. As a result, Kuroda is assigned to escort Princess Sara (Jenya) of Alitoria during her visit to Japan, while Rikako is removed from the Kashiwada case and all previous investigations.