The young family resides in the well-off coastal town of Kamakura. However, their normal life is disrupted one day when Haruto gets home from work to receive a call that their daughter has been kidnapped, with her kidnappers demanding a 500-million-yen ransom.
The police launch an investigation headed by Chief Inspector Yoshino. The police team, including officer Keishi Katsuragi, get to Haruto’s home, where he receives a work call about an emergency from his business partner Kanako.
As the clock continues to tick, Haruto feels the pressure of raising the ransom cash and decides to seek help from a certain party. At the same time, desperate Michiru asks her college friends Aoi and Itsuki for help.