Berk is cooking again, when something invisible comes out of the trap door and starts throwing things about. Berk scores a direct hit in retaliation with some yellow goo and the little creature - Bubo - becomes visible and bright yellow. When Berk eventually catches the naughty Bubo, he finds a hole in the top of his head, blows him up like a balloon and lets him off into the air and lets him drop back down the trap door.
Cast of this episode
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