Mary and her lamb Marshmallow are best friends. When it's time for Mary to return to school after a yucky virus has kept her at home, Marshmallow follows her there.
When a young woman claiming to be a princess appears at the royal palace, Prince Maximus gives her a test to determine if she is a truly-true princess. This story is a twist on Hans Christian Andersen's classic fairytale The Princess and the Pea.