When one of the boys is about to become a father, three friends must make a decision that will change their lives forever.

Norwegian engineers are searching for oil and Egon Olsen convinces his friends to buy stocks in the oil market. In the process, Egon, stumbles upon a scheme to fool the Norwegian Government that there is indeed no traces of oil in the North Sea. The Olsen Gang tries to tell the ministry the truth about the oil but they are caught by Sheik El-Altan who, in order to make sure the boys keep their mouths shut, kidnaps Valborg and brings her to Egypt.

Henrik Johnsson is 19 and has a much too interesting life to have months again to live. He has brain cancer, so what shall he do with the little rest of his life?

Follows the Junior Olsen Gang as they hunt down missing tax money stolen from a bank in 1835.

Twenty-year-old Thomas Lindgren gets out of a youth rehab clinic, after being falsely accused of raping his ex-girlfriend's younger sister. He is looking forward to a new life and the summer in Oslo with his friends - But soon, he finds himself beaten, tied up and held hostage by the victims father who is desperate to find the truth.