Cao Depei is a successful photo-journalist. He has a happy family, consisting of a pretty and gentle wife, a clever son and himself. They have been living happily for years. When he turns forty a son whom he has never known comes into his life. His coming is like a stone cast into a calm pool. The quietness is broken, and ripples appear…How can he get his son, who desires his father's love to understand this? Cao is desperate, not knowing which way to turn, and all sorts of thoughts and feelings come into his mind.