Xu Chengkang (Huang Weide) is the director of a planning company and a typical "bachelor". He met actress Youmei (Meng Li) by playing "Truth or Dare" with his friends. Xu held a birthday party at home and invited his classmate Tang Fei (Miao Pu), a taekwondo coach who studied in the United States, and Tao Ying (Qin Hailu), a good friend from the cooperative company. On the same day, Tao Ying's elementary school classmate Wang Ben (Zhang Wen) also convened a party at KTV. Wang Ben is the son of the chairman of Ruikang Shoes. His mother died early and his mind is not very mature. He is a typical big boy. Wang Ben's father, Mr. Wang (Sun Xing), is an antique car enthusiast. In order to motivate Wang Ben to do a good job, he gave him an antique Mercedes-Benz with special meaning. Wang Ben was very excited, so he convened several good friends including bar singer Peng Zhuoran (Li Wei) to celebrate. The two parties on the same day were very lively. At the end, people on both sides played the game of "Truth or Dare" at the same time. As the game unfolds, although it is fun to play, the "truth" is mixed with lies, and the "big dare" pays a heavy price...