Kairos

Seo Jin cooks up a scheme so that he can grasp the situation better. While doing so, Seo Jin lets Ae Ri from her timeline know that there has been an accident in which he lost Da Bin and Hyun Chae. After figuring out a crucial piece of the puzzle, Seo Jin heads straight to Ae Ri’s mother, only to see the police carrying someone's dead body out of her house.