Grace, Kat's mother brings home a patient who is afraid of sharks. Kat uses real shark facts to try and ease his fears. Kenny is invited to meet the patient, but decides to eat him instead. Kat decides to take Kenny to the vet, who decides to give him a muzzle. But Kat knows thats not the best solution. Kat's patient is always being attacked by mosquitoes. It dawn's Kat that there is something that makes him attracted to sharks. When Kat does a little detective work she finds out that he feeds seals.