After being mistakenly switched at birth, Lin Mo was reunited with her biological family at eighteen, but lost herself amid emotional estrangement and seven years of unrequited love. Reborn at eighteen, she decides to stop seeking everyone's approval, focus on her studies, and change her destiny through hard work. When she meets Murong Shi again, the man who once protected her through her darkest days, she discovers that the rival of her former lover also has a gentle and steadfast side. As unresolved mysteries surrounding her identity and a new love begin to surface, can Lin Mo learn to love herself, cherish the person before her, and finally fulfill their unfinished promise to visit a sea of flowers?