This movie is based on true events that took place in Iraq. Megan was a striving Marine corporal who proved to the whole world that friendship and dedication can move mountains. While on a tour with the US army, she came across Rex, a big, angry and scary dog. She managed to bond with him pretty quickly, and soon the two became inseparable. Together, they saved numerous lives out there on the battlefield. Megan and her loyal partner carried out over 100 missions side by side and always made it back to base safe and sound. But when the corporal drove into a mine on the road, it put their long-lasting friendship in danger.