Dragons used to live with the humans in peace, until one day, when most of the dragons mysteriously disappeared, and the world was flung into a never-ending war. The Norvagen and Draigar quarreled with each other like children, until the king of the dragons, Thoron, broke up the fight and talked with the two leaders, Kyra and Dev. He convinced them to join forces against the Ice Vorgan lead by Xenoz, who is a powerful wizard.
The Norvagen and Draigar combined forces to create the Fyren, a mix between the Draigar and Norvagen, similar to how the Draigar were a mix of the Valtheran and Warfang. The Fyren invaded the portal of fire, which was claimed by Xenoz, to get Prince Dev's father, who was captured (for whatever reason, in the stop motion movie, he was Kyra's father). They discovered the crystal of Aurathon was stolen by Xenoz, so they marched to Xenoz's lair (Dragon Mountain) to retake it.
In the final battle, the crystal was successfully stolen by Kyra and Dev. But to retake Xenoz's lair, they must take the crystal to the top of Dragon mountain. With the help of the dragons, Kyra and Dev make it to the top, where Xenoz sealed himself inside an impenetrable cage. Kyra and Dev mounted the crystal, which sealed away Xenoz away forever, and retaking Dragon Mountain.
9858 Dragon Mountain
9889 Portal Of Fire
9879 Vorgan Ice Fang
60044 Battle Chest (Non-canon)
9887 Fire Storm Fortress
9664 Fire Ambush
9828 Fire & Ice Movie Edition Set
60040 Giant Dragon Egg
9857 Ice Outpost
9856 Fire Sentry
9892 Smoke Dragon (Dragon Egg)
9893 Frost Dragon (Dragon Egg)
9874 Flame Dragon (Dragon Egg)
9875 Ice Dragon (Dragon Egg)
9859 Ice Claw (Attack Dragon)
9853 Firedrake (Attack Dragon)
99929 Movie Edition Set
9892 Mongor Strife Dragon (Dragon Egg)
9874 Kragmyre Wrath Dragon (Dragon Egg)
9875 Daakon Fury Dragon (Dragon Egg)
Stormount Rage Dragon (Dragon Egg)