“Your darkness might become someone else’s light.” A man who lost his wife in an accident, Oh Dohyeon. And a woman who locked herself away under the weight of the world’s judgment, Min Sia. Through each other’s wounds, the two finally come face to face with the boundary between light and darkness. He finds forgiveness within her, and she finds in him a reason to keep living. But between guilt and salvation, love always demands the cruelest choice. A single mistake brought their time to a standstill— and now, as they begin walking toward the light again, this becomes “a story of healing deeper than love.”