Muroi, who retired from the police early, took in the children affected by the incident and moved to Tohoku. Although he was told cold words from those around him, he lived quietly while protecting his children. However, the body of the perpetrator of the special fraud and robbery was found deep in the mountains, and the village fell into chaos.

警察を辞め、帰郷した室井慎次。「事件の被害者家族・加害者家族を支援したい」という思いで、少年たちと一緒に穏やかに暮らしていた。ある日、家のそばで他殺死体が発見される。それは室井が指揮を執ったレインボーブリッジ事件の犯人グループの一人だった。