In "The Orphan, The Marine, and the Mastiff" Josh Amos introduced us to Brother, a broken Marine war fighter, and Mei Mei, his eight year old half sister as they struggle to overcome their respective traumas and form a family of choice.

In "The Orphan's Autumn" we find Brother and Mei Mei are continuing to bond together as an odd couple, and are off to a shaky but determined start as they struggle to get on with making the best lives that they can for themselves. They are aided by the growing English Mastiff puppy Boudicca, because as Brother says "Little kids need dogs."

Unfortunately for the odd couple siblings, dark forces are working to take Mei Mei away from Brother and Boudicca. Brother finds that all of this training and experience at war, are mostly inapplicable to his current challenge. To save his sister, Brother will have to find new ways to cope with his war injuries and his PTSD as he struggles to thwart the looming threat to his new family.