Oliver has been secretly training as a spy all his life. On an ordinary afternoon after school he overhears two suspicious-sounding men talking about bacteria, AK47s, vicious dogs and a mysterious island. When two men leap from a black van and abduct his Grandmother, Oliver's first big spy adventure begins.
Oliver follows, is kidnapped, tied up, chased across a field by guard dogs barking at his heels, catches a train, hires a taxi, rides a horse, is shot at, drives a boat and is hopelessly lost at sea.
He is brave and resourceful, but can he help his grandmother escape?