When an accident claims the life of a young girl, during the same incident her twin sister fell into a coma and awakens 10 years later.

A series of flashbacks show two little girls playing on a bridge and falling into the water.

Frightened, he attempts to pretend he doesn't see her either but the woman appears in front of him.

A young woman, So-yeon, wakes up from a creepy dream in the hospital, finding her mother beside her.

So-yeon is taken home and pampered, tended to by a servant who tells her that she has been in a coma for ten years.

Hyun Sik meets So-yeon, and she mentions that she remembers playing with him when they were kids.

The secret was hidden by her mother, who had been telling the villagers that Hyo-jin was dead and the one alive was So-yeon, since she was her favorite.

The mother then falls into the lake to embrace So-yeon's spirit who is finally comforted and persuaded to let go of her vengeance against Hyo-jin; the mother apologizes for being late as she and So-yeon sink to the bottom of the lake together.