Řina Weberová, the daughter of a retired colonel, is the owner of a not very prosperous photo studio. Her elderly boyfriend, banker Václav Novák, secretly supports her financially because he is in love with her. One day, Řina meets her childhood friend, Vincenc Špaček, who has entered military service in Prague. The enterprising Vincenc and his inseparable comrade Vendelín Křídl advertise Řina's studio in the military garrison, so that the soldiers flock to Řina to have her photograph them. One day, Lieutenant Novák also shows up and immediately falls in love with Řina. Řina's father finds out that banker Novák is visiting his daughter, and he wants him to marry her...