After her marriage, Shen Nianxi is betrayed by her husband, Feng Tingbai, and his childhood sweetheart, Su Lihuan, who conspire against her. As a top hacker, Shen Nianxi reclaims her identity as "S" and turns the tables. At a critical moment, Ruan Yi'an risks his life to protect her, and the two eventually become a couple. On their eighth wedding anniversary, however, Shen Nianxi is targeted in a scheme that sends her memories back to when she was eighteen. Confused by her seemingly "strange" husband, Ruan Yi'an, and their young son, she struggles to understand her situation. The mastermind, Wen Jinchen, disguises himself as a psychiatrist and gradually drives a wedge between them through fabricated memories and emotional traps. With Ruan Yi'an and his son's clumsy yet heartfelt protection, a battle over memory and true love begins.