Gavin Donnigan left the Marine Corps a shell of a man, hounded by guilt for deaths he couldn't prevent. Teaching a self-defense class at the local gym brings some stability to his life, along with a gorgeous leggy woman who won't give him the time of day. Zoe York lost her twin sister to a freak car accident a few months ago. She's been struggling to bury her grief, but it isn't until she signs up for a self-defense class with a distractingly-hot instructor that she begins to come out of her shell again.