Frustrated in his efforts to be accepted by the Doom Patrol, Beast Boy tries out for the Teen Titans, only to find that he cannot join either team without his guardian’s permission because he is underage (at this point, Gar Logan’s guardian is Nicholas Galtry, who does not know his secret identity). Disgruntled, he joins a carnival run by Baltzer, unaware that the crooked animal-trainer and his hypnotist henchman are using him as part of a scheme to rob their audiences. Investigating, the Teen Titans disguise themselves as an acrobatic team, the Masked Mazeppas, and join Baltzer’s troupe in order to uncover evidence against him. When their true identities are revealed, the Titans are forced to battle a hypnotized Beast Boy in his many animal forms, before they are able to break his trance and team up with him to stop Baltzer.