Each of these exciting stories, told in the voice of one of the 11-year-old volunteers at the Wild at Heart Animal Clinic, offers a first-hand account of animal emergencies and rescues. This series is sure to win the hearts of readers who are wild about animals!Dr. Mac takes Brenna, Maggie, and Zoe to Florida to visit a manatee rescue center. Shortly after they arrive, Brenna goes on a rescue mission and helps nurse an injured manatee back to health. She also learns the center is in desperate need of money. She'll do anything to keep it from closing -- and to save the manatees.