Kok Pin, Boon Hock and Terry are classmates in "EM3" stream. In Singapore, that means that at the age of 12, the government has decided that they are not as academically inclined as their peers. Kok Pin is creative and a born artist but his parents would rather he focus on his Maths and Sciences. Boon Hock comes from a low-income family and needs to balance school and helping out at the food stall. Terry, a spoilt brat is just too lazy a student. While the three children suffer from the pressure of school, their parents have another set of problems - their jobs and careers.

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.