The architect Gösta complains to Dr. Holm about his wife Gunilla's introverted character. Holm proposes a drug that will make her more outgoing.

Kalle Jeppson is the joyful owner of a rural inn, "Spången" (The Footbridge). His only problems are all the bylaws that makes it difficult to have a quiet drink and the shrew of his wife who is always nagging on him. Kalle is afraid to tell her that Karin the maid is really his daughter from the days before their marriage.

Spoiled upper class girl must join a home defense unit to learn military drill and fall in love with a lieutenant.