Django (Jamie Foxx) is freed during transport when a German dentist, Dr. King Schultz (Christoph Waltz), whom in actuality is a bounty hunter, saves him from the two men who are transporting the slaves by killing one and leaving the other to be killed by the remaining, now free, slaves. Schultz informs Django that he has sought him out to identify the Brittle brothers. In exchange for his help, Schultz will give him his freedom, some cash, and a horse to help him get back on his feet.
Christoph Waltz and Jamie Foxx. Source: Business Insider
Soon after, the good doctor and Django come to an agreement to continue seeking out bounties. Although at first a bit uneasy, Django learns that he has a natural talent for killing white men for money. Go figure. As winter nears it end, both bounty hunters go in search of finding Django's wife, Broomhilda (Kerry Washington) learn that Broomhilda is working for Monsieur Candie (Leonardo DiCaprio) at his plantation, Candyland.