let me tell you, the title says it all! and this is the first book of the series so it's incomplete

 

Quest is a war hero, specifically a super hero with no record or memory of his past, was unjustly blamed and banned from the kingdom after a large battle fought for the king. now, 20 years later, the king's snobby 11 year old son, Nestor, comes to him and claims that he and Quest must search for a mythical weapon that was said to decide the fate of the world, and he Nestor, is the only one who can find it. now some of the most villainous creatures in the land are being sent by their dark lord to bring the boy back. Quest, now reluctantly must help the boy and save the very kingdom that banished him 20 years before. but the more trying obstacle Quest and Nestor seem to face is trying not to kill each other first.