Lin Mo's age is accidentally stuck at eighteen. Reuniting with her younger brother, Shen Yihan, who has become a group CEO, she helps him sort out his career and feelings while embarking on a journey to find her lost relatives. The former family residence now belongs to business tycoon Xie Guanyan. Lin Mo rents a place there to improve her sleep, spending time once again with this old rival from her high school days. Circulating among various figures and dealing with lingering ties from the past, she slowly restarts her brand-new life amidst an everyday life full of laughter.