The unknown, large mafia organization is now showing its true face. The pressure that GSI and John Falk and his family have put on the organization, makes them fight back on all fronts. The rule book is thrown out. But to go after Johan Falk's family and trying to kill his wife could be the biggest mistake the organization has ever made. GSI closes up around Johan's family and the final battle begins ...

瑞典某市国王路公寓发生一起入室凶案，弗兰克•瓦格纳出于自卫错手杀死持枪入室的歹徒，瞬间被推向舆论的风口浪尖。他带着妻儿找到了GSI的特警约翰•福尔克寻求帮助。与此同时犯罪团伙头目推测弗兰克可能是潜伏在圈子里的卧底，找到平素与弗兰克有贸易合作的商人赛斯，恐吓其散布消息重金悬赏捉拿弗兰克的人。紧接着一名GSI女警员无故被枪击致使昏迷，更令案件陷入重重谜团。警察当局威胁弗兰克接受不平等契约，不然便要令他成为全国通缉犯。弗兰克愤怒出逃。随着五年前一宗击毙犯罪分子的案件重新被想起，真相渐渐浮出水面，人们口中的杀人嫌犯弗兰克原来真是为警察当局兢兢业业的卧底，也就是传说中的“代号丽莎”，可他终究难逃亡命生涯……