On a trip to visit her cousin in Poland, a child initially struggles with not feeling "Polish enough." She finds it hard to understand her aunt's quick Polish speech and feels embarrassed at her own attempts to speak Polish. When she and her cousin discover their shared love of fairy tales, though, they bond instantly and set off together on an adventure across the city of Warsaw to find Syrenka Warszawska (the Mermaid of Warsaw). Endnotes include Polish words and pronunciations, as well as information about Polish history, Polish fairy tales and Warsaw landmarks.