Four undying warriors who've secretly protected humanity for centuries become targeted for their mysterious powers just as they discover a new immortal.
William Thatcher, a knight's peasant apprentice, gets a chance at glory when the knight dies suddenly mid-tournament. Posing as a knight himself, William won't stop until he's crowned tournament champion—assuming matters of the heart don't get in the way.
In the future, medical technology has advanced to the point where people can buy artificial organs to extend their lives. But if they default on payments, an organization known as the Union sends agents to repossess the organs. Remy is one of the best agents in the business, but when he becomes the recipient of an artificial heart, he finds himself in the same dire straits as his many victims.
