Kidnapped as a child to be trained in the art of poison, So-Han Jin returns to his hometown in search of the group of New Moon Sword Dancers who raised him. However, upon his return, So-Han discovers the sword dancers have been defeated by a nefarious sect that now rules the area, with some members having been abducted. What would have been a heartwarming reunion transforms into a quest for revenge as So-Han begins his search for the remaining sword dancers, and he’s willing to poison anyone who gets in his way.(Source: WEBTOON, edited)