Prosecutor Jun Wu Jiu is sentenced to prison after he was framed for a crime he did not commit. Filled with hatred, he is determined to avenge his teacher and fiancee. In spite of his circumstances, he relies on his wisdom to solve many cases and uncovers an earth-shattering secret. Can the mayfly shake the tree? Can a prisoner exact justice?
As the eldest daughter of the Fang Conglomerate, Fang Yu was raised to become the sole successor of the company, yet she goes against her family's objections to pursue boxing and won the championship title at the young age of 18. On the other hand, Ming Tian comes from a poor family. He once stopped schooling for three years in order to work and he decided to apply for a sports scholarship despite not having any background whatsoever. Fang Yu was one of the first to see his talents and their relationship grows over time.
Ren Yifan has spent three years waiting for his ex-girlfriend, Chen Qing, who suddenly disappeared. He then meets Ye Lin, who resembles Chen Qing, only to learn she is his new boss and her half-sister. As Chen Qing returns seeking revenge, Ren Yifen and Ye Lin must navigate love, rivalry, and the power of forgiveness.
After his release from prison, Luo Jianjun marries terminally ill Jiang Xin and struggles to win over her hostile son, ultimately forging a true father-son bond through perseverance and love.