Who wouldn’t want a pair of trousers with pockets that are always filled with money? Mats can’t believe his luck when he finds just that. Together with his friend David, he buys the whole toy department and lives it up without a care. But soon the trousers become an affliction. Large sums of money are disappearing from Sweden’s bank vaults without a trace, and the police are on the lookout for the alleged ‘financial terrorists’. Could it be the money in Mats’ pockets? Then evil businessman William Otto kidnaps Mats’ father in an attempt to get the trousers. Mats, David and their new friend Livli must face the danger and set things right. Based on the 1967 book by Max Lundgren, this thrilling adventure reminds us that friendship and family are our real wealth.