Grace, Annie and Tommy are growing up fast as police officers, but nothing can prepare them for the turmoil they face every day. It’s a year since the fall of the McIntyre crime gang and the vacuum has been filled by rival gangs, all competing for dominance. Constable Shane Bradley is drafted in to help, but his motivations are unclear. Tommy is dangerously seduced by the world of intelligence policing, while Grace struggles to deal with her son’s absence, and growing feelings for fellow officer Stevie. As a young loyalist threatens to take over the city, the officers face a major gangland feud – culminating in a violent and devastating confrontation.

琼（莱丝利·曼维尔 Lesley Manville 饰）和汤姆（连姆·尼森 Liam Neeson 饰）已经相互陪伴扶持着走过了大半辈子了，两人之间早已经培养出了十足的默契和信赖。他们都认定了对方就是自己可以托付余生的那个人，夫妻之间的感情非常的亲密和坚实。本以为日子就会这样一天一天的在平静中流逝，琼竟然被诊断出患上了乳腺癌。                                                                      　　这突如其来的疾病彻底打乱了两人的生活节奏，但不管事态怎么变化，汤姆都选择坚定的站在琼的身边，成为他的依靠。汤姆陪伴鼓励着琼同病魔展开了抗争，虽然一路上也有绝望和情绪崩溃的时候，但每当这些时刻降临，汤姆总是会用无限的温柔和包容抚平琼焦躁的情绪。