After last robbery, Olsen Gang went to Majorca, but without any money, as Benny and Kjeld accidentally threw loot to the garbage bin. Egon breaks to the local restaurant to get back on track with the finances, unfortunately he's caught and whole gang returns to Denmark. After some time Egon is released; Kjeld and Benny are waiting for him but Egon abandons them: He has been hired by Stock Broker Holm Hansen to open a safe in Switzerland belonging to his deceased associate. Egon demands 25% of the value equivalent of the contents of the safe as payment for his work. Holm Hansen agree, but has his Swiss henchman double-cross Egon once the safe is open and leave him at the mercy of the Swiss police. Egon escapes though, and makes it back to Denmark, where he reunites with Benny and Kjeld with a new plan to exact revenge and claim his payment.