Children are disappearing from the town of Miramar, and the Unicorn Riders are sent to investigate. But Krystal is beginning to struggle with the responsibility of being a Rider. When the leader of a group of entertainers offers her a life of glamour and fun, Krystal must make a choice–will she give up being a Rider? And will her decision put the other Riders and their mission to save the missing children at risk?