Four years ago, due to a misunderstanding, a pair of lovers were separated in different places. Four years later, what would happen if the two met again. Four years, a college time apart, there is a completely different social relationship; four years, the edge of the little girl who vowed never to give up for five buckets of rice has been smoothed away by society; four years, Father Time has witnessed the union of lovers and the separation of couples; four years, you and I have been swallowed up by time, what is left?