Nothing is more frightening, as the narrator points out, than a ‘time-rich nosy person’. Exhibit A is Ahn Geo-ul (Gyeong Su-jin), who commits herself to social justice causes with terrifying tenacity. After temporarily renting a unit in the Baek-sae Apartment building, she discovers that a loud, hard to locate banging noise occurs from 4am every night, making the residents’ lives an insomniac hell – and so she determines to engage in her own disruption and to find the culprit of this acoustic assault, simultaneously eliminating her eccentric neighbours as suspects, and recruiting them to her cause.　　Focusing on a woman who is an unstoppable force for good, it is also a plea for community cohesion and solidarity.

她撞见渣男出轨意外穿越，成了被將军一杯酒赐死的胖夫人，可恨的是那將军和小妾竟长得和前世的渣男小三一模一样！ 她为报仇查出一切，解毒后摇身一变竟成了绝世大美人 ！