Unhappy about how much homework they have to do, Arthur and his friends dare each other to skip school

Brain and Francine devise the perfect plan to get even with Muffy after she bribes the judges at the science fair

Arthur's Grandma Thora, a marbles champion, trains him for the first-ever Elwood City Marbles Tournament, but does not tell him that she will compete against him

After her friends help her get the lead in the third grade play, Francine becomes so intent on making the play perfect that she almost ruins it

When Buster impulsively drops a Cybertoy into Arthur's backpack in the drugstore one day, he feels so guilty that he finally confesses to his friend and they try to return the popular toy before anyone else finds out

The Brain does not believe in superstition, but when he tries to prove that superstitions are nonsense he starts finding bad luck everywhere he turns

A curious young bear, who does not want to miss the delights of winter, skips his first hibernation to play in the snow, glide on the ice, and admire the glittering rows of icicles and snow-covered pine trees

Frustrated by Santa's slowness at Christmastime, Muckle the elf creates a mechanical replacement called the Deliverator and proposes a series of contests to prove that it can do Santa's job better than he can

Muffy is so sure that Francine cannot be nice for an entire week that she bets her Princess Peach watch on it, and now it is up to Francine to keep her temper

When Arthur fails to show up for his second piano lesson, his music teacher dismisses him. Now Arthur has to decide how much he wants to learn to play the piano