Among the Moso people in southwest China, women are the heads of households, the farm managers, they pass on their names and property to their daughters, they choose their lovers, and they do not marry. The very ideas of fatherhood and marriage are almost unknown, sexuality is free. The Moso say that “man is like the effect of rain on the grass, no matter who does it, what counts is that the grass is watered”. They are a model community for the UN, yet their way of life is threatened. Nowadays, the Chinese government is cracking down on cultural minorities – notably attacking them through finance. Tourism is developing in this region and advantageous bank loans are being granted to married couples. Western-style marriage has become a fashionable phenomenon. Lamu is an Ama – a mother, the head of her household. She is faced with a problem that is eating away at her. Her niece Erchema wants to marry and live with her husband... This decision is totally incomprehensible to Lamu. For the Moso people, marriage is a threat to harmony, an essential value that comes before anything else, including money. What will become of the Mosos?