When she was young, wealthy socialite Cheng Baoning casually helped Chen Jianian, who came from an impoverished family, out of a tight spot and funded his studies. Later, the Cheng family went bankrupt and her father passed away, and she fell ill with a blood disorder. Chen Jianian suspended his studies, worked four jobs, donated bone marrow, and gave blood, sparing no effort to save her. Accompanying each other for many years, they became special friends. Mistakenly thinking Chen Jianian liked a new intern, she took the initiative to run away to let them be, only to discover later that the intern was his long-lost sister. Chen Jianian had been secretly in love with her for years, and the two cleared up their misunderstanding, confessed their true feelings, and finally became sweet lovers.