Kaos has been banished to Earth where he is stuck in a frozen state like what happened to the Skylanders. But thanks to his Portal Master powers, he is freed. He then uses a portal to get back to Skylands. And almost immediately, he accidentally revives one of the Arkeyan Conquertrons who swears loyalty to him for it. Seeing a new oppurtunity to conquer Skylands, Kaos uses his newfound giant robot to look for the ancient Iron Fist and it's up to the Skylanders and the Giants to stop him.