娃娃影后李菁在本片饰天宫仙女七妹，因向往凡间生活而偷偷下凡到了七十年初的香港，但七妹兴奋之余，险上阿飞的当，幸得金峰饰的董自立所救；后董的孤儿院遇困境，七妹施法相助，却被指是鬼魂…

Li Ching is the Seventh Sister, an angel who comes down from heaven to see what life in Hong Kong is like. In Hong Kong, she runs into Zili(Chin Feng), a reincarnated version of her deceased lover, Dong Yong. Zili, with help from cook Uncle Bull(the warm, portly Peng Peng), do their best to watch over homeless kids in an run-down orphanage. However, a heartless tycoon named Xu Caifa wants the land where the orphanage is and he's willing to go to extremes to get it. Armed with omnipotent powers, spirit, and help from her "celestial sisters", Seventh Sister works to defend Zili, Uncle Bull, and the orphans from Xu Caifa.