Young Soo faces his brightest and darkest days at the same time. His promising future crumbles down to pieces.

The first clue emerges in the middle of the mountains, but everyone becomes more worried than relieved.

In Sung somehow comes back home alone. Although everyone is relieved about it, Hyun Min is still missing.

The incident is now clarified. The long investigation comes to an end, but with some details left uncovered.