Flight attendant Su Wantang accidentally mistook passenger Lu Chengchuan for harassing her during a flight, and the two only cleared up the mix-up after making a scene at the police station. Little did they know that fate would strike repeatedly: when she went to the hospital for a checkup, the attending doctor turned out to be Lu Chengchuan; when renting a place to settle down, the landlord was none other than him. A pair of incompatible sworn enemies were forced to start a cohabiting life, bickering endlessly. Amidst one comical collision after another, they let go of their prejudices, slowly came to understand each other, and staged a heartbeat story of falling in love after starting off on the wrong foot.