Henry and his big sister, Summer, team up to throw their monsterdog, Beckett, the most roarsome birthday party ever! But something strange is happening: all of the pets' noisy toys are disappearing. When Henry investigates the mystery, he finds a fuzzlebird who wants peace and quiet for her newborn baby. Luckily, Hugglemonsters always do the right thing, and Henry finds a solution to make his furred, feathered, and monster friends happy, and still have the best pet party ever!