Azusa and Kanami have been best friends since high school. After Kanami dies in an unexpected accident, Azusa despairs yet finds comfort in sending text messages to Kanami’s cellphone. Kanami’s parents wonder about Azusa’s identity, and upon visiting the orphanage that their dead daughter cared about, are moved by her good deeds.

Haruto Narusawa, the president of a video game company, enjoys life in the affluent seaside town of Kamakura with his wife and daughter, who attends an elementary school. However, tragedy befalls this happy family when his daughter is kidnapped. Haruto must now face numerous hardships as he navigates through the complex web of human nature that begins to show its ugliness. The only way to save his beloved daughter is to take matters into his own hands without the police's involvement and, together with his wife, stand against the kidnappers. Can this family's story reach a happy ending? Or will theirs be a tragedy? This non-stop family suspense-thriller tests the bonds of a family facing life's worst nightmare.