Tom hatches an unorthodox plan to use a Monstrous Nightmare to test Alex's new fire suit, endangering the secret of dragons.

After a fight with her mom, Jun joins Tom on an adventure into the Fire Realm, where her knowledge of myths saves the day.

When a tiny Fireworm dragon ends up at ICARIS, Alex must decide between her mom's excitement and keeping the dragon secret.

During an attempt to get displaced Fire Gronckles back to their native realm, D'Angelo accidentally feeds them Catastrophic Quaken eggs.

Eugene discovers the Lair and demands a dragon of his own.

The dragon riders must sneak a very sick Magma Breather into the ICARIS infirmary.

The Sky Torcher and Flame Throwers invade the Crystal Realm; Tom must conquer his demons and bond with the Fault Ripper to defeat the Sky Torcher.