With our rebellious heroes staring at their 3rd strike, expulsion looks like their reward for repeat rulebreaking! Keen to watch the X-VENTURE Xplorers fall from grace, Captain Morgan issues our heroes a final ultimatum; win the Ultramech Challenge or exit Exobot Academy once and for all! Ebulliant as ever, Rain's confidence is soon eclipsed by the arrival of a foe the likes of which they have never faced! With hopes fading with each victory achieved by the flawless Black Draco, what can Rain, Sean, Jake, Louis, and Stone do to keep the dream alive? What is the secret to besting the FEARSOME BLACK DRAGON?