Henry and his big dog Mudge celebrate Henry's birthday with a pi�nata, a lively birthday party, and a cake shaped like a fish tank, making May first the best day ever.
Trying to be neighborly, Mr. Putter decides to serve tea to Mrs. Teaberry's knitting club, but chaos ensues when Tabby the cat and Zeke the dog find the party irresistible.
While enjoying autumn weather and activities, Mr. Putter, realizing how much he misses going to school, takes his cat Tabby, their adventurous neighbor, Mrs. Teaberry, and her cake-loving dog Zeke to "Show and Tell."