Tom struggles under the pressure of being the new Dragon Whisperer for Rakke Town; Thunder rises to the occasion to help him.

The parents leave for the night and tell the Riders not to bring the dragons to the surface while they're gone; D'Angelo and Eugene get locked in the hangar with the dragons after Eugene triggers a security lockdown.

Jun struggles to be taken seriously for her love of myths; Tom suspects ulterior motives when Jun forms an unlikely connection with Sledkin.

Eugene believes he and Webmaster have the strongest Rider-dragon bond; Eugene's confidence in their relationship is put to the test when Webmaster seemingly abandons him for a pack of Deathgrippers.

The Riders discover that an explosion in the Hidden World injured a dragon; with their number one suspect being Sledkin, they follow her to expose the truth.

When the dragons fall victim to Buzzsaw's poison darts, D'Angelo struggles to keep a cool head and find a cure while others panic.

After Buzzsaw injures a water dragon, the Riders go against their parents' wishes and "borrow" a bathysphere to travel to the deepest part of the Giant Realm Sea to rescue it.