Join billionaire Scrooge McDuck and his nephews for their globe-trotting, treasure-hunting, money-making adventures. Scrooge and Flintheart Glomgold both have horses entered in the Kenducky Derby, but if Flintheart wins he will become the world's richest duck! Then, while searching the ocean for McDuck's lost fortune, Scrooge, Gyro, Launchpad and Doofus discover it has been taken by mer-people. And when Scrooge races to get his fortune measured by the scales of Macaroon, his attempt starts an aerial battle.