Happy mariners, the

The four Robinson children, 12 year old Rex, 10 and a half year old twins Guy and Elizabeth, and Martin, who is 7, are about to go on an astonishing adventure. Their sleepy life in a quiet London suburb will be exchanged in an instant for a dangerous sea-voyage, a battle with pirates, an encounter with cannibals, and a very serious mission to find an iced cake on a desert island.