Soji Shimada

Masato sustains serious injuries in a car accident. He regains consciousness but loses all memories of the accident and fellow passenger Haruka. Masato, who is a medical student, tries to recover his lost memories with the help of his friend Ken, but soon strange things start happening around him…

Private Detective Kiyoshi Mitarai and Miyuki Ogawa arrive in Fukuyama, Hiroshima Prefecture. They are interested in a case which involves discovered bodies. The bodies were found drifting in the Seto Inland Sea, where the currents repeat every 6 hours.

Kang Qiao (Huang Zitao) witnesses Xia Yingying (Yang Caiyu) in the process of committing what could be a crime, but yet is drawn to the beautiful girl. After getting to know her better, Kang discovers that there are even more mysteries surrounding Xia and finds himself placed in serious danger.

Kiyoshi, a brilliant detective, inquiries on mysterious cases with his childhood friend, Ishioka, a novelist.