Sammy Feral is a lucky boy. His family run a zoo and so he spends his spare time hanging out with orangutans, crocodiles and snakes. But his luck has just run out - his entire family has been infected with a werewolf virus! Now his mum, dad and sisters are howling at the moon, craving raw meat and, worst of all, trying to infect Sammy! Luckily, Donny and Red - a crack team who investigate animals that don't exist - are on hand to help. But with an evil professor determined to take over Feral Zoo and no known cure for the virus, things aren't looking good for Sammy!