Ghost has two problems: a girlfriend who refuses to believe she might be pregnant and a dog who has apparently decided she's his entire world.

After weeks of unusual symptoms, arguments, and Riley's increasingly protective behaviour, Simon's suspicions are growing. But when a routine investigation takes a devastating turn and Riley takes a bullet protecting his master, Ghost finds himself facing something far more terrifying than any battlefield.

He's always been good at protecting his team. He's just not sure he can protect everything he loves this time.