Female protagonist: Su Nian, 28 years old, is an independent bookstore manager with a gentle and tough personality. Due to the shadow of being "neglected" in her previous relationship, she is cautious and sensitive about intimate relationships.
Male protagonist: Shen Ze, 30 years old, an architectural designer, workaholic but delicate at heart. He once missed important relationships because he was focused on his career, and he longs to find a partner who can understand him.
The two reunite unexpectedly due to the "bookstore renovation design". The male protagonist is the childhood friend of the female protagonist's ex-boyfriend. The past relationship is intertwined with the current heartbeat. At the same time, they face the double test of "career and emotional balance" and "the shadow of the ex".
