It's About Time For the Synopsis

In a world where magic is a thing of mythology, and steam and gunpowder run the scene, Princess Maria's castle of Iassé in Tyrule has been attacked by a conquest-hungry king, Diorn. Her own father, Peter II, is powerless to defend against such a massive force, and their allies from far-off Altesea have hardly helped. The castle falls, and in the chaos of evacuation, Maria is captured, along with her cousin and bodyguard. Also among the prisoners is a teenage Altesean soldier, Wesley, who, after his regiment was slain, surrendered to avoid a terrible death. In anger over a dead spy, Diorn orders princess Maria killed, but the Altesean soldier volunteers to take her place hoping to redeem his honor; however, his life is spared by the intervention of one of Diorn's own officers. Wesley, Maria, and their two fellow captives escape in the night, and endeavor to reach allied territory. Diorn's officer, who overnight found a price on his head, soon joins up with them, though some in the company doubt his trustworthiness. They spend one week in the hill country, evading bandits and the elite forces of Diorn, only to face betrayal once freedom had been thought secured.