Instead of helping neighbors in need, social worker Byung-hoon finds himself in need of help due to mounting paperwork and excessive work stress. He is forced to make a home visit by his devil-like boss. Ok-soon's house, which he cautiously enters, is strangely lit only in the living room. In fact, it's unclear why a dilapidated old house needs a living room, but Byung-hoon's mind is filled only with 'successfully finishing the job'. He hears the story of Ji-seong, the runaway husband, from the homeowner Ok-soon, who imitates a noblewoman annoyingly, and her children, and realizes their goal is a more 'efficient and legitimate' way of divorce. Now Byung-hoon has one goal. How will he shatter this family!