The story, which is said to be original, is about Utsumi’s last case before she leaves for Oklahoma. Utsumi is at the crossroads of life when her boss asks her to go to Oklahoma for training. At such time, she arrests a murder suspect, Jounen Ken-ichi, and makes him confess to his crime. But after being transferred to Nagano Prefectural Police, Jounen makes a completely different statement and insists that he is innocent. Being suspected of arresting the wrong person, Utsumi starts a re-investigation with her colleague, Touma Kento.