20-year-old Flea and 18-year-old Charlie are good friends who live in Somerset, England. Flea goes out regularly with Charlie, to catch spiders, fighting fishes and fly kites.
The boys have to earn money for their trip to Bangor to catch the Big Daddy of all Fighting spiders, the Araneus Diadematus. They hear of a legend of hidden gold in Portsmouth and they decide to hunt for it.