After the death of her father, young Iva returns to a small village in a valley in the Georgian mountains and takes a job as a conductor on a small mountain railway. There she meets her colleague Nino. Every half hour the gondolas cross between the mountain and the valley, and a playful romance gradually develops between the two women. It begins with furtive glances and develops into special ideas such as water fights, costume dressing up and a romantic evening. The boss observes this friendship with suspicion, as he himself tries in vain to get closer to Nino. When Nino can no longer hide her plans to work as a stewardess for an airline from Iva, a conflict arises between the two, which is, however, again resolved playfully.
“Resolved playfully” by…bumping donuts? These summaries could be more helpful.