Skylands is in peril! Kaos has unleashed his most evil weapon yet — the Doomstation of Ultimate Doomstruction. With all of Skylands on the verge of collapse, a special team called the SuperChargers has been assembled to pilot an unstoppable fleet of incredible vehicles. Now you and the SuperChargers must embark on epic adventures over land, under sea, and through the sky to stop Kaos and save Skylands!Nightfall was a Dreadwalker from Fogshadow Tower, a mysterious fortress in the middle of the Poison Sea. While most Dreadwalkers stayed within the noxious cloud they called home, Nightfall preferred to dive into the black abyss and hunt the dark monsters that threatened her people. One day, as she was exploring a deep cavern in her submarine, the Sea Shadow, Nightfall came upon an enormous object that pulsed with a strange energy. It was gigantic, and before she could comprehend what she was looking at, it hatched! Out came a creature 100 times larger than anything she had ever seen! She fired the engines and raced back to warn her people. Just as the last citizens boarded an evacuation ship, the colossal head of the Leviathan broke the surface of the water and let out a terrible roar! Without hesitation, Nightfall rushed towards the monster, blasting it with everything she had while the others made their escape. This act of heroism caught the attention of Master Eon, and the rest is Skylander history!