Young married couple, Martti and Ulla, are spending a carefree weekend at their Rauhanlehto villa. Their peace is disrupted when the in-laws and Ulla's sister Alli, come to visit.

Adalbert "Mussu" Koikkalainen inherits 9,000 marks from his uncle. To buy a milk shop, Koikkalainen needs another thousand marks and work experience, so he applies for a job at the department store Sampo, where he is hired as a scapegoat to receive customer complaints. The saleswoman Irja Salo, who is under threat of dismissal, falls in love with the general manager Vaara, whom she thinks is a traveling salesman.

Old Virtanen is a respected night watchman at a textile factory and a single father to his daughter Aino, who is about to graduate from high school. The heartless factory owner Kuusela fires Virtanen, who is forced to look for a new job. When Aino, who is in love with the manager's son Veikko, disappears after her graduation party, her father, who has fallen ill with worry, is overcome with despair.

Raili moves away from her mean aunts. The young woman enjoys her independent life, but debt, a deceitful boyfriend, and getting fired from her office job get her into trouble. However, Raili's uncle Salomoni and his wife Salli support their relative. Olli, a lawyer, also wants to help Raili, who has fallen victim to blackmail.

After naval sergeant Pekka Kuusisto runs into his old crush, nurse Leila, she stays on his mind as he embarks on a submarine combat exercise.

Medical student Antti Ahonen, who is fighting tuberculosis, finds himself in the middle of a love triangle with his friend Heikki Huhtamäki and his crush Helmi Hirvinen.