The story begins with the encounter between Lin Yan and Cheng Ye, and unfolds a series of warm and hilarious daily urban life around them and their friends Su Qing and Wang Yifan. When Lin Yan first arrived in the workplace, dreams and reality collided, and he gradually grew up. Cheng Ye faced an entrepreneurial crisis, and had entanglements and tacit understanding with Lin Yan. The budding love was mixed with the pain of growing up. Su Qing and Wang Yifan test each other in friendship and love. With the growth process, workplace challenges and family troubles, they each face life choices and confusions. In the end, all members completed self-salvation in friendship, love and dreams, and faced life with strength. The story is interspersed with humor and ups and downs, and a rooftop witnesses their growing years of laughter and tears.