Half-brothers Joël and Régis have nothing in common - apart from their father. Otherwise, the two are fundamentally different: While Joël is unemployed, and blames this situation on the fact that he is a black man and France is a racist country, Régis is fully socially integrated. When their father is dying in the Antilles, and they travel to see him, they are still constantly at odds. An old, mysterious aunt of the two, who has been watching them since their arrival, then decides to teach them a lesson and magically transports them to the year 1780, the time of slavery, where the two must now join forces to firstly get out of slavery and secondly back into the 21st century.