High school freshman Jessica Walsh is a Viragoa woman warrior who must protect her hometown from danger. And in Nightshade, California, trouble is always lurking. At the towns Battle of the Bands, Jesss boyfriend, Dominic, and his band, Side Effects May Vary, are up against Hamlin, a band so popular,their fans follow them everywhere. Soon,the competingmusicians are doing risky, illegal, and even fatal thingsand claiming that they heardstrange musicthat compelled themto do it. Can Jess and her friends track down the tuneful tyrant before its too late?