In 1492, Christopher Columbus is arguing with the king of Spain whether the world is round or flat. Eventually, the King kicks Columbus out of his palace. Queen Isabella of Castille speaks to Columbus from a window, offering him her jewels if he can prove the world is round. Bugs Bunny emerges from his rabbit hole and tells Columbus that he can prove that the world is round. He takes out a baseball and glove and throws the ball around the world. When the ball returns, it is covered with travel stickers from all over the globe, proving Columbus' claim. After this, Columbus sets sail around the round, and Bugs Bunny accompanies him as a mascot. The crew thinks Bugs Bunny is bad luck, and as time passes and there is no sight of land, these feelings grow stronger. When Columbus tells Bugs Bunny that they will hit land the next day, Bugs Bunny hurries to tell the crew and celebrate with them. The next day they do not hit land, and many weeks pass. Stranded with little food at sea, the famished crew decides it is all Bugs Bunny's and fault plan to kill him and possibly eat him. Bugs tricks them into jumping overboard by having them look through a telescope pointed at paintings of landscapes. After this, all the boats that were following Columbus leave. Now it is only Bugs Bunny and Columbus. As Bugs Bunny serves Columbus the little portion of food left, Columbus pictures Bugs as a piece of meat and begins to chase him with the intent to kill and eat him. As this chase is going on, the boat hits land and Bugs Bunny claims he found it. Then, Columbus claims that he found land first. Bugs says there is no use changing history for him.
- ABC airings excised the scene where King Ferdinand II of Spain hits Christopher Columbus on the head with a mallet and says, "She's flat like your head," during their debate on the shape of the world.
- The working title was "Lucky Rabbit's Feat".
- The portrayal of Christopher Columbus is a caricature of Fredric March's portrayal of him in the 1949 feature film Christopher Columbus.