Episode Title:Demon Heartland.Episode Description:Under the orders of Twin Masters, HighRoller sends the Sea Elephant Army and the Hermit Crab Army to a secret island to recover Twin Masters' heart. At the same time when First Squad and the Infantry are out to destroy Twin Master's heart, Mystique Sonia has some doubts about Yan Ching. When First Squad finds Twin Masters' heart, it is revealed to be a chaotic bomb.