Once the Skylanders arrived at the lair, Spyro stood courageously. "You have arrived at the moment of truth, Skylanders." Eon said. "Only with the help of the Portal Master can defeat Kaos and rid Skylands of his evil once and for all. But beware. Kaos's evil elemental servants lurk throughout. Go forth and find the entrance to Castle Blackthrone. It is there you will meet your destiny. Good luck, Skylanders." "You heard the man." Spyro said. "What say we teach Big Head a little lesson?" All 32 Skylanders let out their battle cry. "FOR SKYLANDS!" As they charged, they fought many enemies, like Tech Spell Punks, Shadow Knights, Lava Kings, Drow Witches, Arkeyan Blasters, and Flame Imps. Many traps were set as well, from moving platforms, spinning blades, and electric stabbing fangs. Eventually, they managed to get to Castle Blackthrone. Now, the final battle was about to begin.
As Castle Blackthrone turned upside down to reveal an arena, all 32 Skylanders went forth to face Kaos himself, sitting atop his throne. "FOOLISH Skylanders!" Kaos cackled. "You and the foolish apprentice have played right into my hands!" Spyro, Gill Grunt, and Trigger Happy stood ready. "It's over, pipsqueak!" Spyro yelled. "We've rebuilt the Core of Light and banished the Darkness! Now, all we have to do is deal with you!" "So what if managed to survive and take all of the Eternal Sources? BIG DEAL! If you restored the so-called "Core of Light", it's all for nothing! Because now, you have followed me into MY realm! And here I am, all powerful, and you are NOTHING!" "Bring it, Big Head!" Gill snapped. "Yeah! And for what you did to the Dirt Seas, you still owe me five bucks!" Terrafin added. "And this'll be also for when you sent me adrift on that glacier!" Slam Bam roared. "I would've still be with you if you hadn't expanded your Troll military!" Boomer said. "That's not as fun as blowing stuff up!" Then, Kaos's throne lifted into the air, and the final battle began! Also summoning every single one of his minions, Kaos slammed his throne into the ground, giving Spyro a chance to ram him! Kaos, however, was ready and summoned an evil version of the dragon, Dark Spyro! It wasn't long until evil counterparts of the other 31 were summoned as well, but they were all eventually defeated. However, the Dark Portal Master still had one more trick up his evil little sleeves. "HAH!" He laughed. "Even though you managed to not get squashed, you now face the most powerful and hideous of all my minions!" Then, the entire arena was set skyward! "Meet the same minion that destroyed the Core of Light,' Kaos warned. "And will do so again. Meet the beast that sent Eon to his well-deserved bodiless oblivion! MEET MY HYDRA!" Then a massive monster with four dragon heads emerged. Possessing the elements of Fire, Water, Life, and Undead, this Hydragon was a force to be reckoned with! Luckily, Spyro knew just how to deal with this. He, Trig, Chop Chop, and Bash began to harness the energy and magic of Skylands. And in a bright flash, they turned blue and gold, unlocking their Legendary Forms! Then, the battle intensified, with the Hydra using its Elemental Spells, more minions joining the fight, and Kaos using his throne (Which he called his super-strong ultra-destructive all-powerful mechanical suit) to squash the Skylanders! Finally, to end it all, Trigger Happy bombarded both Kaos and the Hydra with his Golden Machine Gun, Gill Grunt used his Anchor Cannon to dent Kaos's throne, then Spyro used his Daybreaker Flame to defeat the Hydra, then defeated Kaos with his Earth Pound! As the Hydra fell to the ground, Kaos was only stunned. "You think this is over?!" He said. "HAH! You think wrong! In fact, I think you think that I think I cannot win! I assure you, I CAN!" His throne started to spark and begin to catch fire. "There will come another day, oh, not now, maybe, but soon! And we WILL meet again! And on that day, I, KAOS, will introduce you to your sweet, sweet, oblivion! HAHAHAHAHAHAHA!" Then, the throne exploded, and Kaos fell on his face. "Well, that worked out quite nicely, didn't it?" Spyro said. "Wait, guys, he's getting up!" Stealth Elf warned. Quickly, the Skylanders readied themselves for another round. Then, a dazed Kaos stumbled around and said, "Fear…. My giant…. Floating head…" Before falling to the ground, unconscious. Gill then turned to Spyro. "Now what?" He asked. Spyro only smiled. He knew exactly what to do.
"FOOLS!" Kaos roared from within his magical prison. "RELEASE ME AT ONCE OR FACE YOUR UNIMAGINABLE DOOM! Do you really think this magical trick can hold me, KAOS?!" Then, the whiny menace received an electric shock from his sphere. "OW! HEY!" The Skylanders had taken Kaos to the Citadel and had trapped him in an energy barrier. "HEY!" Flynn yelled. "Cool your jets, small fry. We've heard enough out of you." "Finally,' Cali sighed. "Something we agree on! You know, you're okay when you're not putting your foot in your mouth." "Back at 'cha." Flynn replied coolly. "Okay, seriously? I'm gonna barf now." Kaos groaned. "EON! I know you're here somewhere! You and your Apprentice Portal Master! Go ahead, send me back to the Outlands! It won't do any good! I'll keep coming back again! And AGAIN! And again. Until Skylands in MINE!" "Actually, Kaos," Eon's Spirit replied. "You're not going to the Outlands this time." "Eh, What?" "I have something more fitting in mind for you." He then turned to his assistant. "Hugo? Would you please?" "ME?!" Hugo cried. "Oh, thank you, Master Eon!" Hugo then walked up to the controls. "You're gonna love this." He said. "We made a few upgrades!" He then pushed a few buttons, making the barrier charge up. "Ok, look." Kaos bargained. "Let me go and we'll split this place! 70-30! What do you say?" Hugo just continued to process. The barrier got stronger. "Okay, how about 60-40?!" More buttons pushed, and the barrier was at full power! "50-50?" Spyro stepped up. "How about 0 for you, 100 for us?" "What?!" Then, it was ready. "Uh Oh." Then, Kaos sped off like a rocket! "YOU HAVEN'T SEEN THE LAST OF MEEEEEEEEEEEEEEEE!" He yelled as he was banished to Earth forever. "WOWSERS!" Flynn yelled. "Now that's fast!"
As Kaos sped farther and farther away from Skylands, he noticed something was terribly wrong. "What the-?!" He yelled. "Everything's getting bigger!" Then, he started to change. "Wait! I'm getting SMALLER!" He then found it very difficult to move, and then it all ended with a big BOOM!
Back in Skylands, Spyro was finally relieved to have that pipsqueak ridden once and for all. He and the other Skylanders turned to Eon's Spirit. "You have done well, Skylanders." He said. "We may have seen the last of Kaos and The Darkness, but there is more to do. Your journey, young Spyro, with you fellow Skylanders and your new Portal Master is only just beginning."