前作的结尾中,以背对镜头、马尾辫的身影登场预告的速水,此次终于正式参战。在第二季中,以速水所属的关东最大极道组织“无双山一家”为中心,牵连上洛毛等“离散之月”,以及宿敌野江谷率领的“月晕组”,两方的对立从北九州扩大到席卷全日本的大规模抗争。与警方的对立愈发激化,甚至连神秘组织也开始暗中行动,事态发展成连死者不断出现的地狱般景象。无论是格斗场面还是枪战动作等,一切都全面升级,更加激烈的抗争场面亦是本作的看点之一。
以大泽俊太郎的漫画《DIVER-组对潜入班-》为基础的本作品,是以为了驱逐恶的根源而不择手段的“最凶”潜入搜查官·黑泽兵悟为主人公的不停悬疑作品。10多岁的时候是盗窃和暴力事件的惯犯的兵悟,但是拥有异常高的IQ和判断力和身体能力,成为秘密结成的潜入搜查官队伍,通称“D班”的一员。那项工作是潜入暴力团、欺诈集团等邪恶组织,去获取情报和证据,是一个很有可能丧命的特殊搜查。
从中学到大学都专注于棒球、外表平平、靠个性取胜的年轻人石黑大和(菅生新树 饰)在入职出版社后,原本想成为体育杂志编辑,却被分配到时尚杂志部门。面对全新的环境和注重外表的同事,他逐渐意识到外貌的重要性,同时反思自己一直坚持“原以为大家不以貌取人”的想法。通过在职场和生活中的磨砺,他开始重新理解人与人之间的关系,以及内在与外在的平衡与成长。
1937年,“七七事变”后,八路军奉命东渡黄河。郑川率独立团开赴前线,激战平型关、获得嘉奖;而国军失利遭批评,周治国不服郑川。战乱中,郑川与失去音讯的妻子黎英偶遇,在黎英帮助下,独立团突袭机场,支援了正面战场。日军受困转而突袭娘子关,太原沦陷。独立团以太岳山为依托创建抗日根据地,首先剿灭土匪,赢得百姓拥护,却引得周福源等顽固派不安,大搞摩擦,黎英牺牲。为顾大局,独立团洒泪撤离。日军随即发动中条山战役,国军惨败,周治国捐躯,太岳沦陷。独立团重新开辟根据地,郑川指挥“太岳围困战”。作曲家冼星海目睹战士壮举,创作《黄河大合唱》。经历鏖战,“围困战”获胜利,最终打败了日本,反法西斯战争胜利。
At the beginning of 2259, Captain John Sheridan replaces Sinclair as the military governor of the station. He and the command staff learn that the death of President Santiago was actually an assassination masterminded by Vice President Clark (who assumed the Presidency upon Santiago's death). A conflict develops between the Babylon 5 command staff and the Psi Corps, an increasingly autocratic organization which oversees and controls the lives of human telepaths. Commander Ivanova, the second-in-command of the station, is secretly a latent telepath who has illicitly avoided registering with the Psi Corps. The Shadows, an ancient and extremely powerful race who have recently emerged from hibernation, are revealed to be the cause of a variety of mysterious and disturbing events, including the attack on the Narn outpost at the end of 2258. Centauri Ambassador Londo Mollari unknowingly enlists their aid through his association with the mysterious Mr. Morden in the ongoing conflict with the Narn. The elderly and ailing Centauri emperor, long an advocate of reconciliation with the Narn, dies suddenly while visiting Babylon 5. A number of conspirators, including Londo Mollari and Refa, take control of the Centauri government by assassinating their opponents and placing the late emperor's unstable nephew on the throne. Their first act is to start open aggression against the Narn. After a full-scale war breaks out, the Centauri eventually conquer Narn in a brutal attack involving mass drivers, outlawed weapons of mass destruction. Towards the end of the year, the Clark administration begins to show increasingly totalitarian characteristics, clamping down on dissent and restricting freedom of speech. The Vorlons are revealed to be the basis of legends about angels on various worlds, including Earth, and are the ancient enemies of the Shadows. They enlist the aid of Sheridan and the Babylon 5 command staff in the struggle against the Shadows.