The soldier Bengt has problems with the drill, so the lieutenant orders punishment drill. Bengt beheves so badly he ends up in the brig but manages to escape.

Mother-in law comes to visit, which means mayhem at home....

Privat 43 Bengt is wooing the nanny Zara, but when Zara's fiance is approaching, she leaves the child she is set to take look after in his care.