The main heating pipe in an aging apartment building becomes clogged. Meng Jinsui, who lives on the first floor, enjoys normal heating but stubbornly refuses to let repair workers inspect her apartment. Taking advantage of the location of the pipes in her home, she threatens her upstairs neighbors and demands an exorbitant compensation fee. Liang Xiaoman's wife, who is pregnant, develops a fever after being left freezing in the bitter cold. Xu Jianshan calmly explains the law. After repeated negotiations fail, he joins forces with the other residents to agree on a plan to install separate pipes along the exterior wall, bypassing the first floor and restoring heating to the building. In the end, the selfish Meng Jinsui suffers the consequences of her own actions.