Eighteen-year-old factory worker's daughter Věra Janáková is head over heels in love with the famous pilot Jiří Málek. She only knows him from a photograph, but that's enough for her to run away from the boarding house and set out to find him. There, she discovers that the old Málek family are expecting the arrival of a girl from the orphanage, from whom they intend to raise Jiří's future wife. Enterprising Věra doesn't hesitate and quickly disguises herself as a thirteen-year-old frog...