The mysterious Baek family moves to Kumsu city and opens the "Pawfect Haven Animal Hospital." The same day a young woman, Lee Yu-jin, is reported missing in Kumsu mountains. Worries of a serial killer…

Mother gives Kyu-tae a "treatment" and he reveils that Park Jae-gon, the student president, is actually the school's Sex Crime Ring Lord. Jung Ho-chul, the murderer, escapes from the Baek's. The Baek …

Detective Kang Jeong-hwan and Officer Oh Man-joong of the Homicide Squad question the Baeks. Ji-hoon's investigates the sex crimes and uncovers Jang No-won, Director of Urban Development, is the lead…

Young-su exacts justice for Shin Ju-kyung and her father while Baek Cheol-hee, Father, goes to rescue Ji-hoon and Kwon Min-jeong. Young-su confronts Yoon Myung-hwan, Pastor of Aspirations Church about…

The reason for the Baek family move to Kamsu is revealed. Detective Kang finds out who the Baeks are. Chief Oh and Ryu Mi-ok, Number 12, capture Young-su and Ji-won to harvest their organs. New facets…

Doom-veloper comes out of hiding. Young-su strives to save Cheol-hee but the family falls into disarray and is confronted on three fronts.