The communal rituals of most villages of the Eastern Niger Delta focus on two great classes of spirits - the heroes and the water people. The heroes once lived with the men, founded their institutions and brought them their characteristic means of gaining a livelihood. Today, as spirits, they continue to maintain the established institutions and the skills with which people wrest a living from their environment. The water people, by contrast, have never lived with men: they are the creators and owners of the rivers and creeks, controlling the state of the waters and the abundance of fish. The little village of Soku, hidden in the heart of the eastern Delta, has a group of heroes headed by Fenibaso, and its creeks and rivers are controlled by the water-spirit Duminea. This film shows some highlights of the annual ritual for Duminea. As in most Kalabari festivals, spirit possession features prominently in the proceedings.