The Gathering

After betraying the only man he ever loved, Hadrian waits for death
amidst the ruins of a sorcerous battle. Wracked with guilt, he agrees to
join a mage-led mission to bring his evil father to justice. But when
Caled, the handsome mercenary he betrayed, insists on joining the
mission too, Hadrian discovers that Caled's need for revenge will set
the two men on a twisted path of desire and hatred.