D'Angelo sets up a new dragon hospital in ICARIS, to his father's disapproval, especially now that Buzzsaw is more dangerous than ever. Things get more complicated when Philip saves an injured Hobgobbler from chocking, the dragons grows attached to him and follows him everywhere, causing trouble. Fed up with the Hobgobbler, Philip shuts down D'Angelo's hospital and bans dragons from ICARIS, kicking out the Hobgobbler. Fearing the Hobgobbler is vulnerable while injured, D'Angelo goes after it int
While thwarting Buzzsaw's attempts to expand into the Giant Realm, Tom gets into an argument with Jun when he is unable to admit his feelings for her. Buzzsaw traps the two inside a giant tree filled with a new type of dragon called Woodchippers and tries to destroy the tree with them inside. Realizing the only way out is to get the help of the Woodchippers queen, the two try to bond with it, but the Woodchipper queen senses their hostility from their previous argument and becomes aggressive, es
The Dragon riders continue their adventures in the Hidden world, but Tom finds that Thunder is having some trouble with being a leader to the other dragons. Things get wilder and more difficult upon the discovery of a seventh Realm that represents a large desert protected by a large Glass-breathing dragon while chasing Sledkin. While the riders and Sledkin are forced to work together to escape, Thunder gets his chance to become the leader he was always meant to be and helps to drive off the drag
When the riders can't seem to get along, Jun proposes holding a tarot reading to foresee the future. However, the cards predict that the team will break up and it only makes their teamwork falter. A new dragon who isn't afraid of eels bypasses the line of fake eels around ICARIS and the team's discord makes their search for it more difficult. They eventually discover the culprit is a Typhoomerang, who calls another of its kind and the two begin a flaming mating ritual that threatens to destroy I
With the team disbanded, Eugene is left alone to deal with Flame Throwers invading the Ice Realm and he decides to form a new team of riders with Alex's Moms and Nibbles. However, his attempts at training his new team end in disaster and Eugene tries to solve the Flame Thrower problem on his own. Meanwhile, Tom and Jun spy on Buzzsaw as he tries to join forces with Sledkin, who has the knowledge to decipher the Viking runes in the Book of Dragons. Eugene almost manages to catch the Flame Thrower
Alex becomes fed up with the other kids relying on her to fix all their tech problems and when an argument with Tom leads to her tablet being damaged, she runs off. Meanwhile, Buzzsaw and Sledkin can't agree between finding dragonsite or finding a dangerous dragon mentioned in the Book of Dragons, leading Buzzsaw to storm off. Realizing how much they've been taking advantage of Alex, the other riders get her moms help in repairing her tablet and search for her to apologize. However, Buzzsaw find
Upon getting back the Book of Dragons, the riders soon found out that Buzzsaw has been searching for the ultimate predator to all dragons, a massive eel-shaped Dragon named after the Midgard Serpent, Jörmungandr, who is imprisoned within the Dark Realm, also known as Helhiem. The riders head down into the underworld to find the Dark Realm and find a most dreary and desolate place where there is withered life, very little light and red Dragonsite instead of green. As they descend deeper into the