Nothing is more frightening, as the narrator points out, than a ‘timerich nosy person’ Exhibit A is Ahn Geoul Gyeong Sujin, who commits herself to social justice causes with terrifying tenacity After temporarily renting a unit in the Baeksae 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