A dog that helped US Marines in Afghanistan returns to the U.S. and is adopted by his handler's family after suffering a traumatic experience.

Kyle Wincott: Nose of a dog, the heart of a marine, sounds like a hero to me!
Pamela Wincott: I am proud of you both.
Kyle Wincott: Oh, you hear that Max? Say hi!
Pamela Wincott: Come say hi to your brother... Justin!
Kyle Wincott: Leave him be. I am just over here dealing with minor insurgency. He is trying to save the whole universe.
Justin Wincott: I don't know dad, I guess I am not a hero like you and Kyle. That Is just how the world turns.
Ray Wincott: I wanted to tell Kyle, I wanted him to know the truth. But the way he looked at me, the way he looked up to me... I just couldn't do it. A hero always tells the truth no matter what people think about him or no matter what the consequences are. And you have always been that way Justin.
Carmen: Max just has to know you want him.
Justin Wincott: Dad's left a really weird message and disappeared.
Carmen: Let's do this.
Justin Wincott: Max... go search.