A cold, hard-nosed lawyer, Zhang, discovers that his past client, Tang, is involved in yet another case of sexual assault. Thirteen years ago, Zhang was a rookie and mentored by a senior lawyer, Tu. Young and ambitious as Zhang was, his outstanding performance successfully helped Tang exonerated from the charge. However, the brutal cross-examination on the victim inevitably became his nightmare. After so many years, tormented by guilt, Zhang finally has the opportunity to atone for his mistakes and avenge the girl he loved. Challenged by Tu and Tang, he decides to pursue justice at any cost.

張正煦律師意外發現過去的客戶——補習名師湯師承，又再度犯下性侵罪行。十七年前，年輕的張律師結識高中生陳新，並漸漸喜歡上這個聰明開朗的女孩。然而，身為菜鳥的他追求事業表現，在資深律師杜子甄的指導下，為湯師承辯護脫罪，而犯下難以原諒的錯誤。如今面對昔日客戶與恩師，張律師決定彌補過錯，並為深愛的女孩復仇，不計代價追求屬於自己的正義。