Two people living in the same city first meet through a game and a love lottery. Summer and Yuyang are three years apart. How can they overcome the gap between the different stages of their lives as students? Yuyang keeps his feelings for Summer hidden deep inside. Having entered the working world early, Summer has never been able to face her feelings for Yuyang, silently turning her love into motivation to get closer to him. After returning from her studies, can Yuyang rekindle their old romance and make up for the regrets of her youth?