I know nothing about Polly Pocket

I came to this Wiki by accident. In LPS: The world of our own Wiki I accidentaly clicked on "Affiliated Wikis" . Well, when I'm here, I decided to explore here. First I need to know what Polly Pocket is (I mean the series). What is the series about? Who are the main characters? I can't read about them because there are no articles about the main characters (except Polly Pocket).