As the Bagram crew assembles at a guest ranch in Montana to celebrate the wedding of two of its own, everyone expects a fun week-long vacation enjoying some much-needed downtime together. But in the picturesque foothills bordering the ranch, a hidden danger lurks.

When the guys stumble upon evidence of a domestic terrorist cell during the bachelor party, it puts everyone directly in the crosshairs of a lethal enemy determined to remain unseen, unleashing a wave of danger every bit as deadly as what they faced back overseas. Then a shocking revelation from the past comes to light, and it may be the key to winning the fight. Now they must come together as a team to eliminate the threat, before they wind up gathered for a funeral instead of a wedding.