sonic and the black knight

You get teleported to a mysterious world. Then you see a princess and a person that looks like a king. Then you attack the knights minions, then the king retreats and tells his goons to find and capture you, but he leaves a talking sword, you name it calibuburn.(your sonic). Either give your self up for the evil king/black knight. Or fight the king/knight. (There's a boss at the end, only if you choose to fight the knights)(there is 6 charecters. Sir Gawin, miss Percival, sir lacelot,king Arthur, Merlina the witch, caliburn, and you/sonic)