Four children dream of escaping the tedium of a summer holiday with their mother. When finally given permission to camp on their own on an island in the middle of a vast lake, they are overjoyed. But when they get there they discover they may not be alone… The battle for ownership of a lonely island teaches them the skills of survival, the value of friendship and the importance of holding your nerve.
Dane Hughes
as John Walker
Orla Hill
as Susan Walker
Teddie Allen
as Tatty Walker
Bobby McCulloch
as Roger Walker
Seren Hawkes
as Nancy Blackett
Hannah Jayne Thorp
as Peggy Blackett
Rafe Spall
as Jim 'Captain Flint' Turner / Polski the Parrot
Kelly Macdonald
as Mrs. Walker
Andrew Scott
as Lazlov
Harry Enfield
as Mr. Jackson
Jessica Hynes
as Mrs. Jackson
Sophie Wardlow
as Gertie
