The Olsen Gang is robbed in Spain and loses the millions they earned from their last heist. Egon has a plan to get the money back by robbing the National State Railways for a gold transport.
The Olsen Gang has traveled south after the success of their last coup, but there's still someone who hasn't given up catching them.
The Olsen Gang is involved in a weapon trade for half a billion. It's their final coup, and Valborg is finally allowed to participate.