Janey Brown feels like she is practically invisible. With her stick-thin legs, mousy brown hair and grey eyes, no one ever notices her. Then a crazy woman turns up at the school gates, claiming to be Janey's godmother. According to hip-hop-talking, larger-then-life 'G-Mamma', Janey Brown really is something special. She's Jane Blonde, Sensational Spylet - and it's time for her first mission...