This drama tell the story of a detective, Lee Da Il (Choi Daniel) who catches ghosts, tries to solve the case of his younger sibling’s bizarre death with the help of his assistant Jung Yeo Wool (Park Eun Bin). He runs into a mysterious woman called Seon Woo Hye (Lee Ji Ah) who appears at every crime scene.
Based on a true tale, the story of an ex-con who enters a house without being invited to live with a married couple with intellectual difficulties and a seven year old daughter.
Jongbun is sick of poverty and she admires Young-ae, a smart and pretty friend. Taking place at the end of Japanese colonialism, a sad but beautiful story about two girls begins.