Danny travels into a natural portal and ends up with a bunch of vikings who train dragons. He discovered that an unknown dragon is terrorizing the local tribes, but when he captures the young creature it turns out that he is not the real problem.

imagine if Danny and Hiccup were brothers and berk didn't just have dragons but ghosts as well imagine how much more crazy it would be! add a few different plot twists friends,a monstrous dragon, and an appearance a crazed Fruitloop and you've one insane story.(i no summary stinks!)