George can't believe that it's already the last day of February. But his hedgehog calendar shows that tomorrow is February 29th instead of March 1st! Huh? The Man with the Yellow Hat explains this is Leap Year, which means they get an extra day. Wowsa! George wants to do something extra special on his bonus day. But what? George soon discovers that there's no shortage of fun events planned for Leap Day: Hundley's Leap Year Dachshund Dash, the Polar Bear Plunge, the launch of Mr. Glass's Boat Hotel (the Boatel!), Professors Pizza and Einstein flying trapeze class and, of course, Chef Pisghetti's famous Leapin Lemon Pound Cake! George makes a schedule to do all five things - a Leap Day record! - but soon discovers that even the best laid Leap Day Plans can go awry. Can George get back on track to hit these amazing activities, or will he need to wait another four years!? / Everything is ready for today's opening of The Man with the Yellow Hat's play, "Lunch on Planet Zooz"! When Mr. Renkins gets a cold, leaving the cast with no understudies, George eagerly volunteers. Only to find out he must learn three roles! - Bill's confident space captain, Mrs. Quint's friendly Zooz greeter, and Mr. Quint's efficient roller skating robot waiter - and fast! George observes what he can in rehearsal but when the cast takes a break, George wonders if can find other people with these characteristics to help him learn the parts. With time running out, George goes out on the town and luckily encounters Shirley the confident bus driver, friendly Mrs. Renkins (and extra friendly Bo!), and efficient waiter Jimmy, and recruits them all! But when Bessie the cow blocks the town road, and draws Bill and the Quints into the drama, the curtain comes up and George finds himself needing to play .... ALL of the roles.