Tells the 15-year love story between Zhou Xiao Qi, a long-time swimming student and You Yong Ci, a transfer student. In high school, Zhou Xiao Qi fell in love at first sight with You Yong Ci. A young and ignorant pure love, the boy silently guarded, but the girl left without saying goodbye. Life after that, 15 years of love long-distance race. Your wedding is also my coming-of-age gift.