In the aftermath of the Irish Easter Rising of 1916, the Clans seek McCarthy Gold as Collin searches for his missing sister. Wicked Head Constable Boyle plots revenge on them all. Irish rebels Tadgh McCarthy and partner Morgan reunite with Peader O'Donnell to unravel riddles they hope may lead them to the McCarthy treasure. Kathy O'Donnell joins Collin in Ireland with an ultimatum to abandon his search for Claire or suffer losing his wife forever. Boyle stalks the McCarthys and O'Donnells in his crazed mission to seize the hidden treasures of the Clans Pact.