The most beautiful miracles happen when it snows! Single woman Kathi works as a secretary at the advertising agency WUNDER. There, others regularly reap the rewards for their creative success ideas. A new assignment brings her together with the photographer Jonas. At the agency's Christmas party, Kathi makes such a mess of things due to a misunderstanding that Jonas thinks she doesn't care about him. Additionally, her job is at risk. Unhappy, Kathi leaves the party and stumbles into the thick snowfall. When she wakes up, a man is leaning over her, introducing himself as her guardian angel. He wants to help Kathi in a wonderful way to finally find her happiness...