Doil’s stint in the army is nearly over, and he looks forward to returning to his a fiancée and baby boy. While on leave, however, he discovers that the baby isn’t his. To make matters worse, his fiancée takes off and leaves him alone with the baby.
Jae-young is a high school student who is often bullied by the school’s mob leader, Yong-gyu. When Yong-gyu is hospitalized, Hoon wants to take his place at the top of the school. Jae-young hoped doing away with Yong-gyu would help him escape the tedious violence, but he finds himself tormented and harassed even more under the persistent Hoon.
After a successful first season, Webtoon "Assassin Jun" is about to begin it's second season. Out of ideas, Jun uses an anonymous email's plot in his Webtoon, only to see real-life terrorist attacks resembling the story unfold.