Emma is about to celebrate her fifth birthday and what she wants most of all is a dog. Her mom, a veterinarian, says she must be a little older to take care of a dog, but Emma insists that five year old is more than old enough. Casper dreads starting a new daycare, but when he arrives there he meets Emma, who shows him her stuffed animal that comes alive. From that day Casper and Emma are best friends and play together all the time, although Sigrid often teases them. Casper is with Emma when she meets an old, very cute dog, Bassa, for the first time.