Having escaped from Vanon's fortress, Guin, the twins and Istavan attempt to cross the Kes River to reach the Kingdom of Argos. The journey is not easy and the group must not only deal with dangerous creatures, but Princess Amnelis and her White Knights.

The Mongaul army discover the hiding place of the Sem, surrounding them at night while they sleep. The Sems are surprised by this attack, and after a short fight attempt to flee; with the Mongaul army pursuing the Sems, all seems lost. Guin arrives with the Lagon and counters the Mongaul army, forcing the them to retreat.