Annie and her pet rabbit, Snowball, invite Henry and Mudge to a dress-up birthday party, but there is some confusion about what the guests are supposed to wear.
While Henry's parents are at a Sweetheart Dance on Valentine's Day, he and his dog Mudge have a wonderful time staying at Mrs. Hopper's house, where they enjoy tea and music and dressing up in various costumes.
In the not-so-pretty house where she lives with her dad and bunny Snowball, Annie plans to make some changes in the decor with the help of her next-door neighbor and cousin Henry and his big dog Mudge.
Henry and his dog Mudge are invited to a sleepover in Patrick's attic, where they watch monster movies, eat pizza, and enjoy a contest to determine whose dog is the best popcorn catcher.
Now that Annie loves teacups, she must find friends who love teacups too. Her cousin Henry doesn't love teacups or any other dainty things, but her father helps her plan a club for girls who do.
After noticing that a visiting hummingbird likes her pink petunias, Annie and her rabbit Snowball, accompanied by Henry and his dog Mudge, fill the garden with pink objects to attract more hummingbirds.
Follows a sleepover adventure shared by Annie and her pet bunny, Snowball, who spend a fun-filled night of baking cookies, braiding hair and telling bedtime stories at Annie's grandmother's house.
Annie takes her rabbit to the home of her new friend, Sarah, to play and enjoys seeing the pretty house full of frilly things, walking in the beautiful garden, and making a tiny garden house for a fairy tea party.
After noticing that a visiting hummingbird likes her pink petunias, Annie and her rabbit Snowball, accompanied by Henry and his dog Mudge, fill the garden with pink objects to attract more hummingbirds.