Priscilla Carpenter and the shark

Priscilla Carpenter is a young Australian vet student working at the Melbourne Aquarium. One day, a diver is attacked by a shark. Will he survive? Why did that shark behave so strangely? And what should they do about it? Priscilla and her friends become involuntary heroines in a quest forcing them to utilise all their skills, bravery and scientific knowledge to win the ultimate race against time.