Abbey, Hannah and Talika are new recruits at Willowvale boarding school’s Vet Cadets program. They are excited to learn all about caring for farm animals and the work that country vets do. Riding horses, shearing sheep and treasure-hunting for parasites are all just part of their normal school day. But when something starts attacking the school’s sheep, the three vet cadets must their scientific skills, animal knowledge and teamwork to try and catch the culprit before it’s too late.