Video information
The drama tells the story of the female protagonist who lost her best friend due to a serial murder case, and 19 years later, she tracks down the serial murder case again to reveal the true face of the great evil. Jin Seo-heung plays the role of the major case unit detective Cheo Young-jin. She is burdened with guilt and shame for not protecting her best friend when she was young, and she is determined to find the murderer. Ryu Deok-hwan plays the role of the science teacher Lee Seon-woo at Shinseong Middle School. He has poured his emotions into his students, only to be hurt in return, and even more deeply. Originally intending to leave the cult, he was persuaded by others to come to Shinseong Middle School, where his sister-in-law serves as the principal. There, he meets a child with a warm and sentimental heart.