As Ye-bun mourns a tragedy, Jang-yeol works hard to track down the true perpetrator. Police identify a prime suspect, but Jang-yeol suspects someone else.

Jang-yeol and Ye-bun work quickly to locate their suspect, only to be proven wrong. In an unsuspecting moment, Ye-bun finds a shocking piece of evidence.

A devastating loss leaves Ye-bun distrusting of Jang-yeol, until she discovers the truth. But just as the case seems closed, another trouble arises.