Tells the love story between men and women in different places who perceive each other's emotions and perceptions and communicate. Because of an accident, assistant architect An Yi and piano tuner Gao Ang become connected through brain waves. Since then, the lives of the two become linked and gradually become the most "understanding" of each other.

In 2009, 28-year-old Li Zi Wei and 17-year-old Huang Yu Xuan met each other. Two innocent and unaffected lives that could each feel marks like ones of their past and present lives. However, they could not find sufficient proof to fill up the emptiness at the bottom of their hearts. An accident let them fall into another Mobius loop that had already happened countless times. Only then did they realize that in different times and spaces, they once had a deep, true love that had passed through countless timelines to search for each other with no regrets. But in that story, their deepest love came at the highest price. If they could start again, would they choose to meet by chance in ordinary life or be scarred by the memories etched in their heart and bones? Or perhaps they can choose to hurt and love all over again, betting on a different ending? based on someday or one day (2019)

In the year 2019, eminent physicist Ye You Ning travels back to his hometown in China from abroad after many years to take care of his ailing grandfather. However, after a thunderstorm, he finds himself transported back to his school days as a student in the year 2006. He discovers that the secret of his time travel lies in the mobile phone of Xia Wen Xi, his optimistic and sunny deskmate. As he attempts to go back to his original timeline by communicating with Xia Wen Xi through the phone and manipulating events in the past, he gets to relive his life in various situations, goes through regrets, and gets to know the gravity of the choices he had made and the true worth of the people he met, including Xia Wen Xi and his old classmates whom he had failed to cherish.

Yu-Hsuan lost her boyfriend Chuan-Sheng in plane accident. She then discovered Chuan-Sheng and a girl look alike Yu-Hsuan both appeared in a photo taken in 1998. Accidentally, she had backed to 1998 and met a boy looked alike Chuan-Sheng.