The Swallows & Amazons are sailing with Nancy & Peggy's Uncle Jim (better known as Captain Flint) when their hired deckhand tells them a tale of his younger days
- a tale to set pulses racing & hopes shooting sky high. Soon their boat is on its way to a Caribbean treasure hunt & they find themselves up against shark storm earthquake
- & the vilest pirate who ever eavesdropped at a porthole.