Eric Stern can't get KAJ's Bara Bada Bastu out of his head. Not only that, he has developed an obsession with solving the riddle of KAJ ‒ who are they, where do they come from? How did three guys from Ostrobothnia go from completely unknown to all of Sweden's favourite? Eric travels to KAJ's home town, Vörå in Ostrobothnia in Finland, to find answers.