As the Tigersharks lay siege on the capital city of Muria, Cannon returns home just in time! However, his welcome isn't a warm one, as even in this time of war, Cannon needs to be held accountable for his actions. Meanwhile, Aspen and Chance's road trip to find Captain Matthews turns into a rescue mission as the Tigersharks trap is sprung! In the scorching heat of the desert, can even Aspen's abilities prevent them from being captured? Or, has Maylander finally gotten the upper hand on the Blue?