Tommy Tyler, a lazy Caribbean sailor, and his tom-boy daughter, Spring, are out to search for a buried treasure. Tommy brings aboard William Ashton, a young lawyer, to help with the search. Ashton turns out to be handy when they encounter dangerous rivals. Tommy also tries to play match maker between Ashton and Spring – a difficult task indeed.
Hayley Mills
as Spring Tyler
John Mills
as Tommy Tyler
James MacArthur
as William Ashton
Lionel Jeffries
as Cark
Harry Andrews
as Sellers
Niall MacGinnis
as Cleary
David Tomlinson
as Skelton
Lionel Murton
as Simmons
