Grace, Anne, and Tommy grew up quickly as police officers, but nothing prepared them for the turbulence they faced every day. It has been a year since the collapse of the MacIntyre criminal gang, and the vacuum has been filled by hostile groups who are all vying for dominance. Police officer Sean Bradley was called up to help, but his motives are still unclear. Tommy is dangerously tempted by the world of intelligence police, while Grace is struggling to cope with her son's absence and growing feelings for her colleague Stevie. When a young loyalist threatened to take over the city, the police faced a major triad conflict - ultimately leading to a violent and destructive confrontation.