The Riders accept an invite to Berserker Island, where their reunion with Heather, Dagur and a young familiar face is interrupted by a sudden revolt.
Guest Cast
Steve Alterman
voices Additional Voices
Mae Whitman
voices Heather
David Faustino
voices Dagur
Alan Shearman
voices Additional Voices
Lucas Grabeel
voices Gustav Larsen
Kyle T. Heffner
voices Additional Voices
Jim Pirri
voices Additional VoicesCast Appearances
Jay Baruchel
voices Hiccup Haddock
America Ferrera
voices Astrid Hofferson
T.J. Miller
voices Tuffnut Thorston
Zack Pearlman
voices Snotlout Jorgenson
Andrée Vermeulen
voices Ruffnut ThorstonEpisode Discussion
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