Gi So-you

When a rookie detective Yoo Ryung's autistic twin sister goes missing, Yoo Ryung joins the subway police team to try and find her.

Kang Cho-Hong works as a delivery woman for a Korean food restaurant. She is a witch and she always finds herself in the business of others.

A swimming instructor and her violent 7-year-old daughter's story intertwines with two characters handling solitary deaths 20 years later, all haunted by a mother's presence in their personal hells.