S1, E1: Before Shin Tamura was born, his father, Bungo Sano, was arrested for murder. Shin and his family were ostracized for his father's crime and lived a life of darkness. However, Shin's beloved wife Yuki accepts his past, and along with her constant encouragement and support, she insists he believes in his father. Shin decides to meet his father, but when he visits the village where his father was arrested, he is transported through time to 1989, right before the incident occurred. Shin sees his family smiling and filled with happiness. Why did Bungo become a murderer? Is he really responsible for the crime? Shin attempts to unravel the mystery behind the incident and stop it from happening as he confronts the past.