Twelve-year old Johnny Dixon and his friend Professor Childermass look for the hidden will left by an eccentric cereal tycoon who wished to make life difficult for his heirs after his own death by suicide.
Even a deep snow the week before Christmas can't keep Nate the Great and his dog Sludge from finding the special card sent to Annie's dog Fang by his mother.
Four adolescents try to raise a British ship which sank in the Caribbean in 1665 with a cargo of gold on board. However, they cannot trust anyone not even themselves.