Complex sentence: The pair travel to Mississippi, and Schultz uncovers the identity of Broomhilda's owner, Calvin Candie, the alternately charming but brutal owner of Candyland, a plantation where slaves are forced to fight to the death in boxing matches called "Mandingo fights".
Split into simpler sentences: The pair travel to Mississippi, and Schultz uncovers the identity of Broomhilda's owner, Calvin Candie, the charming and brutal owner of the Candyland plantation. Candie's slaves are forced to fight to the death in boxing matches called "Mandingo fights".