Huckle's off to do Mother Cat's shopping for the first time when he forgets the list. Huckle's sure he knows what to get so he and Lowly buy potato chips instead of potatoes, orange soda instead of oranges, etc. Mother Cat didn't want party food - until Aunt Rose and Lily arrive for a party Mother Cat had forgotten about. The Police Chief gives urgent orders to Sneef and his assistant Sniff - they must hurry to Nice. Sneef's sure there's a big crime to stop, and everyone on the train is suspect. After a sleepless night watching various "scoundrels" get on the train, the scoundrels are revealed to be police chiefs who've gotten together to throw Sneef a surprise birthday party.
Huckle and Lowly camp in the backyard but after Kenny tells them a ghost story, they're sure they see a huge claw in the shadows. They sleep inside, and then sneak back outside the next morning pretending to have spent the night there. Father Cat tells them the story of when he slept outside - he thought he saw a huge claw too - but it was just a leaf rake.