第 3 季 共 13 集
播出时间：2016年6月24日
第 1 集 Enemy of My Enemy
播出时间：2016年6月24日
While trying to take care of unfinished business, Hiccup and Toothless are lured into a trap. An unlikely rescuer comes to their aid.
第 2 集 Crash Course
播出时间：2016年6月24日
A wounded dragon seeks the Dragon Riders' help in protecting a precious treasure trove against an unfamiliar creature with strange powers.
第 3 集 Follow the Leader
播出时间：2016年6月24日
When things don't go well when Fishlegs is in charge, he gets another chance to prove he has what it takes to be a leader.
第 4 集 Turn and Burn
播出时间：2016年6月24日
When a mysterious dragon attacks Spitelouts storehouse, Spitelout and Stoick have different ideas on what to do next.
第 5 集 Buffalord Soldier
播出时间：2016年6月24日
When the Dragon Riders fly to an island on a vacation, a small creature there has a special effect on the dragons.
第 6 集 A Grim Retreat
播出时间：2016年6月24日
When the Dragon Riders fly to an island on a vacation, a small creature there has a special effect on the dragons.
第 7 集 To Heather or Not to Heather
播出时间：2016年6月24日
The dragon riders invite Heather to the edge secretly planning to ask her to join them. As Hiccup begins training them for the team Heather's dragon refuses to cooperate. Heather decides that it safer if the two of them leave. Fishlegs wants her to stay. Can he help Windshear adjust or will Heather leave the edge.
第 8 集 Stryke Out
播出时间：2016年6月24日
When Hiccup and Toothless are kidnapped and Toothless is forced to fight other dragons for entertainment, the rest of the dragon riders must save them before it's too late.
第 9 集 Tone Death
播出时间：2016年6月24日
The dragon riders take a dragon egg from the dragon hunters and they try to train the baby dragon. Will they be able to do it?
第 10 集 Between a Rock and a Hard Place
播出时间：2016年6月24日
Viggo is building an impenetrable fortress that even dragons can't break through, it's up to Hiccup and the gang to stop him.
第 11 集 Family on the Edge
播出时间：2016年6月24日
Heather's brother Dagur shows up out of no where and asks Hiccup for help finding her. He wants to learn to ride dragons. Dagur sees Heather on the edge and goes the extra mile to protect her.
第 12 集 Last Auction Heroes
播出时间：2016年6月24日
Snotlout is sent on an undercover mission to Viggo's dragon auction as part of a plan to rescue the dragons and stop Viggo from getting richer.
第 13 集 Defenders of the Wing, Part 1
播出时间：2016年6月24日
The dragon riders meet Viggo to put an end to their fight. Viggo suggests hiccup to stay under the marked line in the map and that was his agreement. The dragon riders take time to think and decides to check what's up there in that area in the map. They set off to the island just above the line and are captured by a community known as the Defenders of the wing lead by Queen Mala. They doubt the riders being dragon hunters. The riders are put in prison. They try to explain but fail. The riders are sentenced to death but seeing their love towards the dragons and the dragons loyalty towards the riders they believe them. Mala reveals about the great protector of the wing, they come to know that the protector had been taken away by the Dragon hunters. Hiccup then understands that Viggo used them as a distraction and took that as an opportunity to capture the great protector. Mala believes that the riders betrayed them and captures the Dragon Riders.
