I’m honestly not sure what to make of that! I would have preferred to wander around an unsettling, transitional area than sit through it. The storyline centered on the children felt strange and awkward. It seemed like they struggled with how to weave the kids into the story, which created several issues that couldn't be resolved. A significant amount of the conflict—close to 80%—felt misdirected and focused on a single, underwhelming source of suspense. The extended length only served to diminish any tension that might have existed. What happened afterward felt inconsequential given how little connection viewers had developed earlier on. Although most of the actors were passable, Han Ga In didn’t quite fit within the context of this drama.

Source on TMDB