Grandmother Helena Junkkeri is working on a farm that her widowed son Arttu is unable to take on. Taina Raitalo who arrives at the house as a childminder makes the grieving man smile again, and Artu's little sister Päivi in turn delights the entire Junkkeri family with her achievements.

Helena, a beautiful school teacher in a countryside hamlet is just going to marry her childhood friend Erkki, but a day before the wedding her first love Jari arrives to the scene.

Lasse Pöysti's directorial debut film. And Helena Plays On (1951) is based on Aino Räsänen's second novel of the same name in the Helena series. When the Winter War breaks out, Arttu (Jussi Jurkka), the son of Helena (Irma Seikkula) and Jari Junkkeri (Erkki Viljos), go to the front. Arttu proposes to his girlfriend Elina (Leena Häkinen), but the world events come in between. When he is not heard of at the end of the war, the relatives begin to believe that Arttu is dead - everybody else but not Helena.