Mr. Prank hopes to make a fortune when he copies Beatrice's recipe for Double Chewy Honey Gooey ice cream, though his failure to pay her for it means she can't afford a new dress to wear when Barney takes her to the ball. To cheer her up Nev gives her a ruby ring Barney's aunt has left him but it gets stuck on her finger and the only lubricant to hand is the Double Chewy Honey Gooey ice cream. With Mr. Prank's potential buyer for it due to arrive, Beatrice gets her opportunity to save the day and make Mr. Prank pay for her new dress.
—don @ minifie-1