The likeable, somewhat inconspicuous dental assistant Anna Maria has been secretly in love with her boss for a long time. However, the egocentric, always slightly stressed Dr. Leander Winter has no idea of his employee's feelings. Anna Maria is all the more surprised when one day he asks her to play his girlfriend for a short time: Winter's daughter is getting married and as his ex-wife will also be arriving with her new lover, he doesn't want to be alone at the ceremony. In any case, the jealous dad would prefer to prevent the wedding.