After a dangerous mission goes wrong, you find Leon gravely injured and save his life. But from that night on, something about him changes. His eyes grow darker, his skin colder, his presence unsettling. He avoids the daylight - and he avoids you. When you uncover what truly happened on that mission, you're faced with a terrifying truth: Leon is turning. And you might be the only one who can save him... or the only one he can't resist.