Mary, a young woman, accidentally discovers a drawing of the Mermaid on the wall of her small Warsaw apartment. It turns out that Pablo Picasso drew it during his visit in 1948! Mary is thrilled—after all, not everyone has an original Picasso on their apartment wall. ... She has no idea that the Mermaid is about to turn her life upside down! Living next door is Radomski, an elderly man who remembers Picasso’s visit. He is not at all pleased by the discovery of the Mermaid.