Rayne a military war hero, who lived her childhood at her aunts house and was always forgotten about there. When a military husband and wife save her from her home she becomes obsessed with the army. Rayne trains and becomes a K-9 handler. She is put with the most dangerous dog in the place and she must learn to trust him. Once they arrive in Aleppo, Rayne must trust Ace with her whole life once they get into some deep trouble.