There are three rules in the walled city of Redcross: work if you want to eat, go home as soon as you hear the warning drums and do not leave your house after curfew begins. Milly Costello has lived in Redcross for two years and wants nothing more than to leave. But when the mysterious Wolf-Lords arrive, she finds her wish granted in a way she neither expects nor wants. Meanwhile, her friends must deal with a secret - one that threatens disastrous...