Wei Gang (Sun Chun) is the director of East China Hospital. His wife Yaling (Li Fengxu) lives in a sanatorium for many years because of mental problems, and their only daughter Rongrong (Zhang Xinyi) has been dating a man named Hao Hao (Gao Xin) for many years. On Wei Gang's 60th birthday, Yaling and Rongrong returned home to celebrate Wei Gang's birthday. Hao Hao took this opportunity to boldly propose to Rongrong. However, it was on this night that Hao Hao's teacher Zong Feng (Jiang Shan) lost her beloved son Si Ning (Yuan Wenkang). She placed a mobile phone in Si Ning's grave, and was deeply trapped in grief all day, calling this number every day that would never be connected. However, one day, the number was accidentally connected, and the other end of the phone was a strange man named Ma Dong (Yuan Hong).