Race to Fireworm Island Dragons: Riders of Berk : Season 4 Episode 5
TV-Y7 (Universal Kids) Cartoon Network 22m int(0)
Aired: October 17th, 2013 @ 2:00 AM EST on Cartoon Network
Hookfang is losing his ability to catch on fire, and it's up to Snotlout, Hiccup and the others to find the lair of the Fireworm Queen, which may hold the only possible cure, before it's too late.