This is an era when everyone is clamoring for "youth, dreams". It is also an era where society is changing with each passing day and the economy is developing rapidly. Maintaining a true friendship faces too many tests. In the torrent of a series of new social problems, we struggle, watch, be confused, and compromise. This is a story of friendship between three men and two women over four years and six years. In the best years, they stick to their most innocent love. Where will they go in the end?