Hi, I am a Nine Realms Fan, I had this idea when rewatching the Episode 'Downpour'.

I needed to get this one out of my mind.

Ah, Tom remembered that night well.

It had been just after the Fault Ripper had fell into the Fissure, And D'Angelo had Expressed Concerns over what had Happened.

The Hidden world had shown its Colors by now, It was a Deadly Place that was hostile to humans, Hostile even to most Dragons, and even more Hostile to both of them Together, and D'Angelo had told them that ICARIS had it's Guidelines for a Reason. "To Prevent the Death's of Employee's" D had told them, and He agreed. Rules had to be followed.

and all 4 Riders had agreed to create the Rules, Including Rule #3.

"Always travel with a Partner"

Heh, He wished he'd Paid More Attention to that.

Dragons Lair

"WOOHOOO" I Yelled as Thunder did Several Loops in the air, Flying Swiftly around the cave and Avoiding Stalicites.

"That was Awesome!" I Said, "Do it again!" I dared Thunder, He gave me a Warble as he shots on Beams of his Lightning to the Other side, Doing Barrel Rolls even a Fighter Ace would clap at.

"I Didn't know you could do that!" I said to him, Patting his head.

Thunder sets down on a Rocky slab near the Opening to the Outside world, which he lands on dead center with Skill.

It was Rather Early in the Morning today, With the Kullersen Fissure, Located on Baffin island, Only just Seeing Daylight, It was Summer and the Sun was Warm on the Arctic Circle, and The Fissure was no Exception with 80 being the Record high and today it was coming close, at 74, Which was warm.

I step off of his back and onto the ground, and his gaze follows me as I look at the Viking Helmet which happened to be my Family Heirloom, I study the Red Symbol that looked like the one Thunder Burned into the wall.

"What Kind of Secrets do you hold?" i asked the Symbol for some reason, "Why am I asking questions?" I asked myself, Thunder gave me a Coo.

"Thunder...What do you say we do a Bit of Exploring?" I ask

He warbles

"Listen, Listen, We might be able to find a clue to the whole Symbol thing!" I say, He looks at me with Excitement and starts wagging his tailfin.

"Wanna do that?" I ask, He gives me a Excite Yowl as he runs in a Circle and Gestures towards the Fissure.

"I guess that's a Yes!" I said, I hopped on his back and he took to the air.

Thunder flies through the Exit from the cave, Into the Fissure, Avoiding Geysers and Rocks he skirted around the Obstacles with grace No Fighter jet could ever hope to match.

He levels off as we fly towards the Entrance to the Crystal realm.

"That was sick..." I say, holding onto Thunders Scales, Yesterday he had talked to Alex about making some saddles to help them hang on to their dragons and Avoid them falling off, Him in particular since Thunder seemed to fly faster than a jet sometimes.

Thunder flies through the Entrance of the Crystal realm, We see the Golden and Lavender Crystals covering just about everything, Thunder flies around the Central Crystal that dominates the Chamber with speed and quickly departs from it towards a Back area we had not explored.

"We Have not gone there yet, Wanna check it out?" I ask Thunder, Who gives me a Happy warble and he flies into the cave.

We emerge from the cave into a Separate chamber, No, A New Realm, Its Dark here, Lightning Flickers in the Dark Purplish Clouds that move fast across the roof of the Cave.

"A Whole new Realm..." Tom said, Thunder gave him a Warble and flew Deeper into the Realm, In the Center of the Realm lied a Canyon that must lead to somewhere.

"Huh...I think I'll name it the 'Dark Realm'." Tom said, Looking into the Distance, he saw this realm was Barren, Not many crystals and a Few of those Small Dragons flying around.

Suddenly, A Roar above me gets our Attention as a Bully Gembreaker Dives upon us.

"THUNDER!" I yell, "Fly away!" I tell him quickly, His speed is hardly enough to get out of the way of the Gembreakers jaws as they Clamp shut just next to Thunders Tailfin.

"Quick, Take us Back!" I tell Thunder, He Obliges as Thunder Banks to his Left.

I feel rain come upon us as The Dark Realm is swinging into it's Storm 'Season'

"Thunder, Quick, Into the Cave!" I say, But a Gembreaker blocks the exit.

Thunder quickly flies deeper into the Realm as I watch the Gembreakers follow us, I notice that the Storm is getting worse as Visibility is Dropping Significantly.

Suddenly, Below me I see the Blue light of a Bomb Loogie, Before I react it Hits Thunders chest. Followed by a Explosive Crunch and Splatter sound.

Authors Note:

Hey, This idea is actually based off a scene from cold open in which Buzzsaw (Spoiler) almost kills both, After I saw that I wondered.

What if I put this duo into the same Trauma and Punishment I see other people Throwing Hiccup and Toothless into?