Two black brothers send back to slavery time

Two completely opposed half-brothers make the trip to Martinique to find their dying father. In a last breath, he tells them that his most precious possession is the authentic document that freed their ancestors from slavery. Disappointed by what constitutes in their eyes a meager heritage, the two brothers, mad with rage, tear up the precious document, this sacrilege then propels them back in time to experience slavery firsthand.—Canon y mus