Love in the present, let love be regretless. In the moment of a thought, do you choose to love or not? Chen Che (played by Zhang Liang) is a golden boy in the financial stock market. Unexpectedly, an accident caused him to fall on a time-space journey back to the past. He traveled back to the year before his birth, that is, 1989, and met his "mother" (played by Douhua Mei), who was only 22 years old at the time. At that time, his "mother" had not given birth to him yet. Chen Che, who traveled back to 1989, even developed a relationship with his "mother's" bestie Ye Zhenzhen (played by Shao Yuwei)... When he in 2016 met her in 1989 and fell in love with a person who "cannot love", Chen Che in this moment of a thought, should he choose to love or not?