You play as either Bub or Bob, two kids who have magically been transformed into dragons when they entered the mystical cave of monsters. Finish each level by jumping from platform to platform, shooting bubbles from your mouth which encapsulates the monsters. Pop the bubbles to defeat your enemies. Pick up fruit to gain points and collect special items and bonus letters to boost your efficiency and use the lightning and water bubbles to your advantage when fighting off the monsters and bosses. But make haste, or the evil Baron Von Blubba will spawn to hunt you down.