Synopsis
Do Ki seals the end of the painful vengeance against his mother's killer, but the wounds remain. The whistling that reminds him of his mother's last moment still lingers around his ears. Ha Joon newly joins Rainbow Transport as a troublemaker taxi driver, and he holds Do Ki as his role model. Ha Joon accidentally finds a secret passage that leads to the underground maintenance room. What is this place for? How will Do Ki's vengeful journey for the victims unfold along with the precious people around him?
