Welcome to the Island of Struay, home of one of the best-loved characters in children's books and as seen on TV - Katie Morag McColl! As soon as Katie Morag's Big Boy Cousins arrive on the island for their holiday they start causing havoc. Katie Morag can't resist getting involved in all sorts of mischief with them. Find out what they get up to and join them for a beach BBQ with Grannie Island.