Just as spring approaches and Will and Evanlyn can finally escape Skandia, Evanlyn is carried off by mysterious horsemen. Will sets out after them, but one boy against six fierce Temujai warriors is impossible odds - even for a Ranger's apprentice. Halt and Horace arrive just in time. But the happiness of their reunion is cut short when Halt realizes these Temujai are only scouts for a massive invasion force. The four Araluans must work together with the Skandians to defeat their invaders - if the Oberjarl will accept their help.