Mickey, Donald, and Goofy are crewing a whaling ship. Their mishaps include Donald fighting off some hungry birds, Mickey and a bucket of water that keeps doing a boomerang impression, and Goofy firing the cannon and getting stuck high in the air, and ultimately inside a whale. And when he lands the whale well, let's just say they're gonna need a bigger boat.

In Disney's take on the Alexander Dumas tale, Mickey Mouse, Donald Duck and Goofy want nothing more than to perform brave deeds on behalf of their queen (Minnie Mouse), but they're stymied by the head Musketeer, Pete. Pete secretly wants to get rid of the queen, so he appoints Mickey and his bumbling friends as guardians to Minnie, thinking such a maneuver will ensure his scheme's success. The score features songs based on familiar classical melodies.