When the Flyers try to kill him because he's no longer useful, Viggo forces Hiccup to help him get revenge by stealing their Dragon Eye and lenses.

Cast: Jay Baruchel, America Ferrera, Zack Pearlman, Christopher Mintz-Plasse, Andree Vermeulen, T.J. Miller, Alfred Molina, Michael Goldstrom, Hakeem Kae-Kazim, Alan Shearman, Alastair Duncan, Steve Alterman