In a world full of magical creatures and talking animals, high above the skies live sentient creatures known as the "cloud kids." One such cloud kid—a white puppy with blue eyes, floppy ears, and a curly tail—struggles to learn how to fly and fit in with the rest of his kind.

When a sweet smell coming from something sparkly and fluffy on Earth catches his attention, he descends to find out what the source of the scent could possibly be—leading him to Café Cinnamon. There he meets several other puppies: the friendly and stylish Mocha, the lax and bug-loving Cappuccino, the energetic tomboy Chiffon, the artistic and spoiled Espresso, and the cute baby Milk! He also meets a human girl who runs the cafe, and, upon noticing his tail, she names him Cinnamoroll.

Despite his strange appearance and abilities, Cinnamoroll soon finds his place at the cafe among the other puppies. Thanks to his new friends, Cinnamoroll enjoys a life now filled with fun and adorable adventures—even while steering clear of the troublesome cloud kid Cavity.