Taking a Love Rival's Taxi

Tae-han (played by Park Kwang-jung) feels that his wife (played by Kim Sang-mi) is having an affair. In order to obtain evidence of his wife's affair with her lover, he went to Seoul, where his lover Zhongzhi (played by Zheng Baoshi) worked as a taxi driver in Seoul. Taihan deliberately got into his car and arrived at a quite far place. The two of them encountered various situations while moving forward, and they both felt a sense of loneliness at the same time. What will be the development and outcome of the story between two couples and the complicated relationship between them in the end?