该剧设定在主线剧情的五年之前，海豹突击队员本·爱德华兹踏入了中情局的黑暗战线。当他一步步走入灰色地带，就越发难以抵挡内心日益觉醒的黑暗冲动。每个人体内都住着两头狼——一光一暗，相互争斗。最终胜出的会是哪一头？

Navy SEAL Commander James Reece turns to vengeance as he investigates the mysterious forces behind the murder of his entire platoon. Free from the military’s command structure, Reece applies the lessons he’s learned from nearly two decades of warfare to hunt down the people responsible.