From high school hallways to corporate boardrooms, from ghostly reunions to mob drama, HIStory tells daring BL romances across time and space.

Qiu Zi Xuan was an excellent volleyball player in the past, but he had to give up his dreams due to a knee injury. Despite everything he still participates in the team's training. Zi Xuan meets Xia Yu Hao, a guy with a bad temper but huge potential for volleyball. Zi Xuan thinks that it is he who can achieve his dream instead of him. He hopes that Yu Hao can achieve what he couldn't in the past and agrees to help him. On the other hand, there is Wang Zhen Wu, who is Wang Zhen Wen's older brother. Zhen Wen likes his brother, but he can't show his feelings because they are family.

A transfer student, Xia Yu Hao, getting into ZhiHong High School, where he joined the volleyball club and gradually fell in love with the senior student Qiu Zi Xuan.

Liang Jing Hao and Song Rui En fell in love despite their social difference. Soon, they were engaged to be married. However, their happy union was shattered when he discovered that her philanthropic father was the driver who killed his mother in a hit and run years ago and the cause of his father's suicide on their wedding day. The devastated Jing Hao chose to disappear rather than exposing the crime committed by Run En's father. When he resurfaced years later Rui En had to choose either moving on with her life as he did with his or fighting for his forgiveness and saving their love.