It tells a secret love story full of control and redemption between Lu Yao, a doctoral student in the ocean, and Cheng Ye, an engineer at a monitoring station. Cheng Ye used his father's authority to withhold Lu Yao's political review materials and exchanged experimental samples to put him in an academic crisis in an attempt to keep Lu Yao by his side. While Lu Yao was investigating the sewage discharge incident at the chemical plant, he gradually discovered the connection between the Cheng Ye family and his parents' shipwreck that year. When Cheng Ye implemented emotional imprisonment in the name of marriage, Lu Yao chose to report his father's corruption, but unexpectedly revealed the truth about the intertwined fate of the two. In the torn between the cause of marine environmental protection and personal emotions, the lovers, who were trapped in the shadow of the past, finally faced off in court, using scientific data and legal justice to complete each other's final redemption.