After the Treasure Island adventure, Long John Silver turns up on a British Caribbean island, where he hears that rival pirate Mendoza has taken the ship carrying the governor's daughter...and his young friend Jim Hawkins. Naturally, there's more to his rescue plan than meets the eye; he hopes to get a new ship and go back for more treasure...
This time Long John sets out to save young Jim Hawkins (played by Kit Taylor who sadly doesn't possess the memorable screen presence that his predecessor Bobby Driscoll put into the role) from a cutthroat pirate named "El Toro" Mendoza (Lloyd Berrell) but also added into the mix are a slightly more memorable crew of pirates following after Long John's lead and Long John's frequently comedic interactions with his main squeeze Purity Pinker (Connie Gilchrist), who has her eyes firmly set on marriage and settling down the old sea Captain. Things become truly adventurous when the band of pirates set out for a return to Treasure Island and meet up with some most unexpected surprises and obstacles along the way.