影片改编自张康明作家的同名小说，讲述记者林商镇通过关于网络舆论造假的举报得知“网军部队”这一存在的事实后，在采访过程中面对实力强大的对手而发生的故事。

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’ liv...