The story of four girls making their way in the world.
Mu Sheng, Du Zihan, Mu Tanjin and Lan Ran first met in high school. Three years of high school life allowed them to withstand various emotional tests, and they had love and friendship. Everyone has a past person in their heart, and a name that they don't want to mention again in this life.
Can I go back to the beginning? Can I stay with the people around me? Can I gain the relationship I want most?