Staffan Hallerstam

With their parents on vacation, Tommy and Annika spend time with their wonderful friend Pippi Longstocking at her cottage Villa Villekulla, until she finds a bottle with a message from her father Captain Efraim Longstocking, who warns her that he was captured by a band of evil pirates led by Blood-Svente and Jock the Knife, who hold him prisoner in their castle on the island of Porto Piluse, so they can find the secret location of his treasure. Pippi, Tommy and Annika then travel to Porto Piluse to rescue her father before he is forced to reveal the whereabouts of his treasure...

Granhyttan in Sweden used to have rich mines. One day a suspicious couple, Signe and Orvar, arrives in the small town and retires in a purged hut. Nobody knows what they up to; but strange things starts to happen when a young boy, Staffan, finds a piece of shining metal, while playing in a mine.