A chemistry student causes an explosion during an exam. After that, she finds herself as a barmaid and spends the following evening in a cheerful company of musicians and cafe-goers, treating those present with drinks.

The last summer of World War II in a Latvian fishing village. Ten-year-old Rita risks her life to care for and provide everything necessary for four prisoners of war rescued by fishermen—a Frenchman, a Russian, and two Latvians—who are hidden in the attic of a school converted into a warehouse by the German army.