Yoon-young, a 19-year-old girl who dreams of becoming a civil servant, is framed as a murderer and imprisoned in a women’s prison.

A former serial killer with Alzheimer’s fights to protect his daughter from her mysterious boyfriend who may be a serial killer too.

When his wife is murdered, Dong-ho loses the light in his life, breaks down and falls into depression. But he knows that as long as the killer is still around,…