The younger brother playfully used his older sister Qiao Yuexi's photos to meet someone online, sparking an unexpected romantic entanglement. Faced with the other party's request to meet offline, the flustered younger brother had no choice but to ask his sister to communicate on his behalf. Left with no other option, Qiao Yuexi temporarily took over this relationship. Initially intending to handle it seriously and properly to smoothly end this fate, she instead unlocked a brand new, sweet encounter full of surprises amidst gentle and patient interactions.