Publisher's Synopsis
It is 1979. Swedish pop group ABBA rules the airwaves, roller skating is cool, and Mel and Shell are best friends. There is nothing they like more than making up dances to ABBA songs, and there is nothing they like less than Scary Sharon and Stinky Simon. But things are changing, fast. Confiding in her pen pal from 1829, Shell discovers she has a lot to learn about loyalty, honesty and roller skating.