At an institute in Manila, researchers and eco-tourists trade stories about the Mara tribe, who live on a remote island and have an annual festival of rebirth in which some of the tribe forget who they are and begin again. Laure is the daughter of the institute's director; she's a free spirit who has captured the fancy of Nicola, a European photographer. After a courtship in which the voyeuristic Nick indulges Laure's exhibitionism and sexual freedom, they set off for Mara land with Gualtier, an anthropologist, and his philosophical lover, Myrte. As they approach the Mara on the night of rebirth, who of the group will actually join the tribe to begin life anew?

Engineer Jake Holman arrives aboard the gunboat USS San Pablo, assigned to patrol a tributary of the Yangtze in the middle of exploited and revolution-torn 1926 China. His iconoclasm and cynical nature soon clash with the 'rice-bowl' system which runs the ship and the uneasy symbiosis between Chinese and foreigner on the river. Hostility towards the gunboat's presence reaches a climax when the boat must crash through a river-boom and rescue missionaries upriver at China Light Mission.