Somi, a third grader in elementary school, cleans the house every morning. The bruises and scars are clear on the face as if they had been assaulted by someone. In the morning, Somi, who is in fear after seeing the text and text that arrive, suddenly becomes busy. Will "Somi" be able to escape the day's of hellos violence.

Coincidence of being ostracized by colleagues at work without knowing why. The resulting stress is so intense that it is difficult to live and breathe. Sun-hee, a blind person, appears in front of her when she was about to jump to herself because she thought it would be better to end her life. After meeting Sun-hee, the coincidence goes somewhere..

Gyeong-ri' is wandering in the dark. She doesn't know why she's here, what's inside, or how to get out. As she struggles against the darkness to find a way out, she encounters a group of mysterious people. Through her encounters with them, she finds a way out, but willishe be able to escape the darkness?