Liang Jiahui has been living in misery due to his inferiority complex. He has been secretly in love with a very pretty classmate, Yangyang. His only friend, Liu Chengguang has a mother and a girlfriend, Xiaoxi who love him very much.  One day, Chengguan passed away in a car accident. Chengguang's mother, Xiaoxi and Jiahui became very miserable. As Jiahui wastes his life away in his home, a ray of orange light, Orange decides to leave his home, "The Light World" after being bored of his daily routine. Orange came to Earth for a holiday and assumed Chengguan's appearance. Orange brought along with him the warmth shared between family, friends and lovers, helping people to carry on living.