On May 16, 2014, an incident happened in Ruicaodong residential area. Zhao Yanxiu (Yan Zhiyuan), the wife of Gao Donghao (Sun Xianzhou), was found dead at home, but the killer could not be caught. Dong Hao's life was frustrated after his wife was killed, and his only daughter, Gao Jinglin, was tortured by her father's depression. One day a year later, because of an abnormal magnetic field, Dong Hao found that he was able to talk to his wife a year ago on the phone, and got a clue to save his wife's life from the call, but gave him only one day. Dong Hao is determined to seize this opportunity to change his fate and fight alone to save his wife.