When the king of the neighboring island of Cornea makes a peace offering in the form of an arranged girlfriend for either Boomer or Brady, the kings agree to battle in a "Third Wheel Duel" competition for the gorgeous potential royal girlfriend.

When Brady and Boomer learn their dad was the best warrior in island history, they want to be more like him, so they attend Kinkow Fight School. But when instructor Mason favors the Kings, jealousy overcomes his previously prized pupil Mikayla.