The magical land of Droon is in terrible danger once again. Emperor Ko has clawed his way back to power, and his monstrous beasts are on the loose. They have uncovered a magnificent, lightning powered submarine hidden deep within the secret Fortress of the Treasure Queen. With this incredible machine in his grasp, Ko is plotting to completely destroy Jaffa City. You must join Eric, Julie, and Neal as they rush to save their magical friends from total disaster. But to stop Emperor Ko, they need insider knowledge, and there is only one person who can help. You will have to team up with your worst enemy, the wicked Lord Sparr. Can you really trust him to do the right thing, or is he leading you into a deadly trap? Step through the hidden door and dive into an explosive underwater adventure where the fate of Droon hangs in the balance.