In a world where the end of monster painting and the beginning of the new world are finally coming to an end, between the vague boundary between monsters and humans The Netflix series depicts the desperate and desperate struggles of those at a crossroads of choice
Cha Hyun-soo tries to turn Seo Yi-kyung back into a human being, but a monster personality emerges in the process, and metaphor and Eun-hyuk join the fight. Together, they fight against Pyeon Sang-wook, and Lee Eun-hyuk appears as the leader of a rookie group and asks Cha Hyun-soo for help, but Cha Hyun-soo, who has a monster personality, refuses to do so. In the process, Hyun-soo and Eun-hyuk fight a special infected person on a bus, and Hyun-soo becomes stronger by combining his monster personality and human personality. Nam Sang-won tries to take away the body of his child, Seo Yi-soo, and turns it into a monster, but eventually fails due to his resistance. Lee and Lee die, and Nam Sang-won tries to survive through Pyeon Sang-wook's body, but he fails and ends up ruined.
