Set against the backdrop of the Vietnam War's aftermath, "Quarry" follows the tumultuous journey of Mac Conway, portrayed by Logan Marshall-Green, a Marine sniper who returns home only to find himself shunned by a society that struggles to understand the scars of war. As he grapples with his own demons and a fragmented sense of identity, Mac becomes entangled in a dark underworld when he is recruited by a mysterious network of hitmen. With the support of his determined wife, Joni, played by Jodi Balfour, he struggles to navigate this dangerous new life, while also trying to protect his loved ones from the chaos that surrounds him.

The series delves into themes of loyalty, morality, and the haunting impacts of war, all while maintaining a tense and gritty atmosphere. As Mac confronts his own moral compass, he is pursued by relentless adversaries, including the enigmatic and ruthless killer, played by Peter Mullan, who complicates his quest for redemption. With a supporting cast that includes Nikki Amuka-Bird, Damon Herriman, and Jamie Hector, "Quarry" offers a gripping exploration of conflict, both external and internal, that leaves viewers on the edge of their seats.