Yeh Feng-Ying [zh](Screenwriter coordinator, ep 10-21) Chen Han Xuan (ep 1) Du Xin Yi (ep 1-2) Dai Jia Hong (ep 1) Huang Ya Qin (ep 1) Lin Wan Qi (ep 1) Liu Rui Xuan (ep 2-11) Ke Zun Ren (ep 3-5) Lan Meng He (ep 3-5) Lin Ya Chun (ep 4-11) Luo Qian Ni (ep 6-21) Li Song Lin (ep 6-21) Zhang Ya Jun (ep 10-21)
Chen Che doesn't know who his father was and the topic is a taboo in the Chen family. When an accident threw him back to 1989, a year before he was born, he gets a chance to find out himself. Before he could locate his mother, he first meets her best friend, Ye Zhen Zhen, a wholesome girl who helps him navigate the past while he helps her land big clients with his expert knowledge of stock market trend. Through her, he gets to know his younger, happier "mom" and the possible candidates for his father. He soon learns the reason his mother never talks about his father, and he is faced with a dilemma: He must choose between his mother's future and his very existence.
Back to 1989 Original TV Soundtrack (OST) (1989一念間 電視原聲帶) was released on January 22, 2016, by various artists under Rock Records. It contains 12 tracks total, in which 6 songs are various instrumental versions of the songs. The opening theme "A Friend 我們是朋友" by Gary Chaw 曹格 is not featured on the official soundtrack CD. The closing theme is track 1 "Two People 兩個人" by Alien Huang 黃鴻升.