The entire drama is a modern urban fantasy supernatural short series. Its core highlights are the eight masks that grow stronger by devouring money, identity contrasts, the confrontation between a killer and a genius girl, sibling affection, and the protagonist's growth from taking orders to survive to founding his own faction.
Evan Ward is a young supernatural ability user from the outskirts of Chicago. After his mother's death and his father's disappearance, he supports his blind sister Ava Ward and his frail, sickly younger brother Noah Ward by working at a bar and secretly taking commissions. His ability consists of eight masks with different personalities and codes, and the masks must devour cash to become stronger. To pay for his family's medical expenses, Evan takes on the identities of "Gold Mask," a merchant who does not kill, and "White Mask," a killer who does jobs for money, and accepts a $100,000 assassination commission.
When Evan finds his target, the target's lover suddenly transforms into a mutated creature and nearly devours him. Evan kills the mutated creature and completes the commission, but is witnessed by Sierra Hayes from Lakeshore Academy. Instead of exposing him, Sierra pays him one million dollars and asks Evan to kill her within a month, in order to force out true combat experience. After they fight, both are injured, and Evan clearly understands that the power of the masks does not come without a price.
