Zorak the Great is a magician and thief from the year 2105. He is a circus performer with the Martian State Circus, under the direction of the Ring Master.
The Turtles arrive for a day at the circus and the first act they see is Zorak the Great, who performs the magic trick of making a wealthy audience member's jewelry vanish. Though Zorak assures the woman that she can pick up the jewelry later at the Ring Master's tent, they have no intention of returning the stolen goods.
After Zorak's show, the Turtles enter the ring to perform ninjutsu for the audience, and to steal the wallet from a wealthy patron, who the Ring Master has assured them is a 'plant'. When they take the wallet to the Ring Master's tent later so that he can return it to the man, the Ring Master tells them they are gullible. He also tells them that they are now part of the circus and knocks them out with a noxious gas.
The Turtles manage to escape from the train car they are trapped in and enter the front car to reach the conductor. Zorak along with other performers attack the Turtles, and when the Ring Master enters the fray, Zorak uses his magic to enhance the man's fighting skills. Raphael manages to land a solid punch which renders the Ring Master unconscious and Zorak is defeated as well.
John Bishop arrives with the Peacekeepers to take Zorak, the Ring Master, and the other circus performers into custody.