Bröder emellan.

Identical twin brothers Patrik and Peter Brodd haven't seen each other for twelve years until Peter returns from America and goes to Patrik's office and demands that he gives him more money. Patrik becomes so upset that he faints. Peter quickly sends the unconscious Patrik to the hospital and takes over his brother's identity. He soon discovers that Peter is having an affair with his secretary. Peter's wife discovers that her husband has become very charming, not at all the usual boor. Meanwhile, Patrik tries to leave the hospital and stop his brother.