When he was ten years old, his parents divorced and their failed marriage planted a seed in Mo Qing's young heart.
In the summer when Mo Qing was thirteen, he met the cynical Xiao Yi.
In the summer when they were fifteen years old, they met again, which made Mo Qing understand what it meant to worry about gains and losses. Under Xiao Yi's passionate attack, Mo Qing was gradually moved.
In the summer when she was eighteen years old, her grandfather's death became a tight lock in her heart.
Mo Qing embarked on a road of no return.
Three years in prison, meeting again after many years, looking at each other, all seem to be telling: Can we go back to the beginning?