When fifteen-year-old Will is rejected by battleschool, he becomes the reluctant apprentice to the mysterious Ranger Halt, and winds up protecting the kingdom from danger.

In this prequel to the Ranger's Apprentice series, Halt and Crowley travel north seeking Prince Duncan's royal warrant to stop Morgrath from corrupting the Corps, but if they are to prevent a coup that is nearing success, the young Rangers will have to tread a dangerous path toward the annual tournament at Gorlan.

"The mysterious Red Fox Clan, a group of anarchists all donning fox masks, have threatened Castle Araluen and question Princess Cassandra and Madelyn's succession to the throne. Will they succeed in unseating Cassandra and Madelyn and take the throne forthemselves?"--

Will is forced to overcome his fear of Wargals, the foot soldiers of rebel warlord Morgarath, as Araluen's army prepares to battle Morgarath's forces.

Will, now a full-fledged Ranger responsible for a sleepy fief, finds a new adventure as he seeks the traitors who poisoned the king, investigates rumors of sorcery, and tries to rescue his friend Alyss, who is taken hostage.

After escaping slavery, Evanlyn is taken captive by a Temujai warrior, leaving Will to use his Ranger training to find her, despite being outnumbered by an enemy scouting party and the entire Temujai army.

Chasing the Skandian slave-traders who kidnapped Will and Evanlyn, Ranger Halt and warrior student Horace find themselves in the frozen northern islands, where they battle a ruthless black-clad knight as they attempt to rescue their friends.

Tennyson, the false prophet of the Outsider cult, has escaped and Halt is determined to stop him before he crosses the border into Araluen, but Genovesan assassins put Will and Halt's extraordinary archery skills to the test.

Chasing the Skandian slave-traders who kidnapped Will and Evanlyn, Ranger Halt and warrior student Horace find themselves in the frozen northern islands, where they battle a ruthless black-clad knight as they attempt to rescue their friends.

Hal, his Brotherband crew, and the Ranger Gilan have freed the twelve Araluens sold into slavery. Returning to Araluen, Gilan is given a new mission by King Duncan: protect his daughter's life. Princess Cassandra has survived one attempt on her life already, and now whispers of a second attempt have reached the kingdom. A deadly sect known as the Scorpion Cult is thought to be behind the assassination threat.