Qi Ming and Yi Yao are neighbours who live in the same alley. As an older brother, Qi Ming is always helping and protecting Yi Yao. Qi Ming plants a tree for Yi Yao, in the backyard of the alley, and wishes that he's able to give Yi Yao her dream family and the warmth that she wants. As time passes, Qi Ming helps Yi Yao through a misdiagnosed illness, emergency operation and various obstacles, but what could not be prevented was the troubles of love and entering the workforce. After graduating collage and moving out of the alley, Qi Ming and Yi Yao finally overcame all odds and got together. But the two had no choice but to break up again due to their careers. Youth is beautiful, but it also has regrets, Qi Ming, Yi Yao, Shen Xi, Shen Xiang, each of them chased their dreams and came to their own realisation, everyone worked hard to lead a better life.