Dressing up for Halloween is serious business, and these five spirited monkeys are ready to collect a mountain of candy. With their favorite babysitter Lulu leading the way, they march into the autumn night in their creative costumes. Mama has given strict instructions not to lose the rascals, but the neighborhood is packed with other trick-or-treaters looking for fun. When the monkeys bump into some costumed friends, they hatch a plan to pull off the ultimate holiday prank. By swapping outfits, they hope to confuse Lulu and sneak away for a little extra mischief. Their clever disguise game turns the evening into a hilarious mix-up on the sidewalks. This lightly spooky, highly energetic romp captures the thrill of wandering the neighborhood in disguise. It is a festive celebration of candy, costumes, and the silly tricks that make Halloween a favorite night of the year.