The film stars Claude Brasseur and Sophie Marceau as a married couple—she with a dark secret in her past and he, an author suffering from both writer's block and alcoholism—who undergo experiences which strain their relationship to breaking point while vacationing in Haiti.

Staying in a luxurious hotel in Port-au-Prince, Haiti, are the beautiful and sensual Lola, aged about 20, and her husband Alan, a pulp writer some 30 years older.

(“Playing Sophie Marceau's father in La Boum... then her lover in ‘Descente aux enfers’ four years later, is a choice that cost me dearly.

Ce qui m'amusait beaucoup parce qu'il sortait des Boum où il jouait le père de Sophie.

D'ailleurs, entre nous sur le tournage, on appelait Descente aux enfers… La Boum X (rires).

(“After convincing Sophie Marceau to shoot nudity scenes for the film, my bad mind pushed me to offer Claude Brasseur the role of her husband.