The plot revolves around sexual fantasies aroused in a middle-aged black male museum guard — or attendant — by a young white male visitor. Much of the action takes place after closing time. As the guard paces the galleries, a huge 19th-century painting titled “Slaves on the West Coast of Africa”, by the French artist François-Auguste Biard, comes to life, its melodramatic scene of a white master bending over a dying black slave transformed into an up-to-date, leather clad sadomasochistic grouping.