Underdog agrees to marry the Princess to save Polly. Polly is sent back to Earth and reports the news that Underdog must marry the Princess Glissando and will no longer be Earth's hero. Meanwhile, as the wedding on Zot is taking place, a two-headed dragon interrupts the ceremony. After defeating the dragon, the grateful king grants Underdog any request. The Princess sets her sites on Goggle and Underdog requests to be able to return to Earth. The king grants his request and our hero returns.