Mandy's been spending most of her Florida vacation at the local animal park, playing with two tame dolphins, Bob and Bing. The dolphins are happy performing together, but when Bob dies, Bing seems lonely and depressed. Mandy and her friend, Joel, worry about Bing's future. They come up with a daring plan to set him free.

Could it be a ghost horse?

Mandy Hope and her friend James become concerned that a local breeder may be mistreating puppies when two sheepdogs turn up at the Animal Ark clinic.

Mandy and James discover a stray cat and her kittens and try to save them.

On Baffin Island, Mandy tries to aid a husky who was attacked by wolves.

Mandy uses her veterinary experience to cure a lop-eared rabbit's mystery illness.

Mandy and James are distracted from Halloween planning when a local girl runs away from home with a stolen beagle puppy.

Mandy and James are excited to help with a team of mustangs and a rock video, but must nurse the lead horse, Cougar, back to health after he develops a strange, life-threatening illness.

At Animal Ark, Mandy Hope helps her parents treat animals of all shapes and sizes. Even outside the clinic, Mandy can't resist helping any animal in need. When a winter storm hits Welford and causes a break in electricity, Mandy and James are once again called to action. The fate of the annual Christmas Eve dance depends on them! But the bitter cold's affected more than just local entertainment. First, Mrs. McFarlane's new parakeet comes down...