Bai Suji mistakenly accuses An Yufeng of theft and tricks him into taking her bracelet. At Xinghua University, she starts the 'Little White Heart-Beating Club' to address the scarcity of boys, but soon discovers An Yufeng is her rival, establishing his own club. Both clubs must match 50 couples in 100 days to avoid disbandment.
College student Kong Xiaocan discovers that his mother, Kong Guifang, is terminally ill. Through a "life energy" exchange, she regains her youthful appearance at 20 and begins a new chapter in her life, alongside her son and young friends.
Lin Qile and Jiang Qiaoxi reconnect in high school after a childhood friendship and a lingering misunderstanding. As they navigate youth's ups and downs alongside their classmates, they grow through shared experiences and step into new horizons.
