Description：Satomi Satoshi (played by Tori Matsuzaka), a member of the Metropolitan Police Department's Mobile Investigation Team, and his senior partner Inokuma Yuki (played by Fumino Kimura) are a pair of lovers who are married on the premise of marriage. Since they will be transferred if their relationship is made public, they can only date secretly without telling their peers. One day, two female bodies were found. According to the testimony of eyewitnesses at the scene, a beautiful woman with a mysterious and dangerous aura appeared in front of the two. This person is named Tachibana Kana (played by Nanao), her beautiful face is breathtaking, and the ominous aura that accompanies her is chilling. In contrast, Kana seems to have a different feeling for Inokuma, and her involvement in various cases has caused Satomi and Inokuma to unknowingly step into a terrible trap... This film is adapted from the original manga "Siren" by Sayaka Yamazaki