Mortal - The Valiant Series

Earth. Home to an alien race called Ietons that have enslaved humankind. Growing up as a slave has made Jace believe he's nothing-just a worthless animal for Ietons like his owner Archer to mistreat. Not only is Jace struggling to make it a day without being brutally punished, but he's also falling in love with Archer's daughter. If they're discovered, death will be the least of Jace's worries. When beasts start mounting attacks, Jace is caught in the middle of something much bigger: a war to save earth-to save the entire galaxy.
All Jace wants to do is save as many humans like him as possible and the woman he loves. But how can Jace do anything, when he's only a slave? When he's just a mortal? Or is he? Mortal is a prequel to the Valiant Series and a companion to Immortal. The Valiant Series continues with Rogue, Valiant Book Five.