善始善终

　　民国十四年以后，从英国留学归来的纨绔公子路垚（胡一天饰）凭借其超高智商和推理能力，被身手不凡的巡捕房探长乔楚生（张云龙饰）邀请做探案顾问，之后二人又携手正义感爆棚的女记者白幼宁（肖燕饰）组成侦探小分队，侦破了一个个看似诡谲蹊跷的命案，性格迥异的三人在乱世中坚守着正义，维系社会安定的传奇故事。

　　In 2261, the Vorlons join the Shadow War, but their tactics become a concern for the alliance when the Vorlons begin destroying entire planets which they deem to have been "influenced" by the Shadows. Disturbed by this turn of events, Babylon 5 recruits several other powerful and ancient races (the First Ones) to their cause, against both the Shadows and the Vorlons. Captain John Sheridan returns to the station after escaping from Z'ha'dum, but at a price: barring illness or injury, he has only 20 years left to live. He is accompanied by a mysterious alien named Lorien who claims to be the oldest sentient being in the galaxy.
　　Hours before Sheridan's return, Garibaldi is rescued and returned to the station, in rather dubious circumstances. He is markedly more paranoid and suspicious of other alien races and of Sheridan than he was before.
　　Centauri Emperor Cartagia forges a relationship with the Shadows. Londo Mollari engineers the assassination of Cartagia and repudiates his agreement with the Shadows. Londo kills Mr. Morden and destroys the Shadow vessels based on the Centauri homeworld, in an attempt to save his planet from destruction by the Vorlons. Aided by the other ancient races, and several younger ones, Sheridan lures both the Vorlons and the Shadows into an immense battle, during which the Vorlons and Shadows reveal that they have been left as guardians of the younger races, but due to philosophical differences, ended up using them as pawns in their endless wars throughout the ages. The younger races reject their continued interference, and the Vorlons and Shadows, along with the remaining First Ones, agree to depart the galaxy forever.
　　After the Shadows are defeated Garibaldi leaves his post as security chief and works on his own as a "provider of information". He begins working for one William Edgars, a Mars Tycoon, who is married to Garibaldi's former love. While he works ever closer with Edgars, he becomes increasingly aggressive towards Sheridan and eventually leaves Babylon 5.
　　Minbar is gripped by a brief civil war between the Warrior and Religious castes. Delenn secretly meets with Neroon of the Warrior caste and convinces him that neither side can be allowed to win. She tells him that she will undergo a ritual wherein she will be willing to sacrifice herself, but will stop the ritual before she actually dies. When Neroon sees that she actually intends to go through the entire ritual, he rescues her and sacrifices himself instead, declaring that, although he was born Warrior, in his heart he is Religious.
　　As part of the ongoing conflict between Earth and Babylon 5, Garibaldi eventually betrays Sheridan and arranges his capture in order to gain Edgars' trust and learn his plans. Garibaldi later learns that Edgars created a virus that is dangerous to only telepaths. It is then revealed, that Garibaldi was actually abducted by the Psi-Corps at the end of Season 3 and re-programmed by Bester to provide information to him at the right time. Bester releases Garibaldi of his programming, and allows him to remember everything he has done since being kidnapped. Edgars is killed and his wife disappears, but is reunited with Garibaldi after the end of the war. Garibaldi helps free Sheridan and return him to the campaign to free Earth. An alliance led by Babylon 5 frees Earth from totalitarian rule by President Clark in a short but bloody war. This culminates in Clark's suicide and the restoration of democratic government. Mars is granted full independence, and Sheridan agrees to resign his commission. The League of Non-Aligned Worlds is dissolved and reformed into the Interstellar Alliance, with Sheridan elected as its first President and continuing his command of the Rangers, who are to act as a galactic equivalent of United Nations peacekeepers.
　　In the season finale, the events of 100, 500, 1000, and one million years into the future are shown, depicting Babylon 5's lasting influence throughout history. Amongst the events shown are the political aftermath of the 2261 civil war, a subsequent nuclear war on Earth involving a new totalitarian government in the year AD 2762, the resulting fall of Earth into a pre-industrial society, the loss and restoration of humanity's knowledge of space travel, and the final evolution of mankind into energy beings similar to the Vorlons, after which Earth's sun goes nova.

　　故事紧接着上一季继续发展。丹妮莉丝（艾米莉亚·克拉克 Emilia Clarke 饰）率领着她的军师们和无垢者大军终于返回了一切开始的地方——龙石岛，在那里，她同她的盟友们汇合，在提利昂（彼特·丁拉基 Peter Dinklage 饰）的建议下，她飞鸽传书给远在北方的琼恩（基特·哈灵顿 Kit Harington 饰），试图得到他的臣服。
　　那边厢，瑟曦（琳娜·海蒂 Lena Headey 饰）的武断和残暴令国家陷入了四面楚歌的境地，只有詹姆（尼可拉·科斯特-瓦尔道 Nikolaj Coster-Waldau 饰）依然不离不弃的守候在她的身后。镜头转向北境，琼恩和珊莎（索菲·特纳 Sophie Turner 饰）之间的分歧越来越大，与此同时，他收到了身在大学城的山姆威尔（约翰·布莱德利 John Bradley）的来信，信上说在龙石岛的下面，埋藏着数量巨大的龙晶，这是唯一能够抵挡异鬼入侵的武器。

　　青梅竹马的廖云丞（靳骁 饰）和童念（李佳佳 饰）在大学时期相恋，却因为彼此之间的误会而分手。多年后两人再次相见，却是身份地位悬殊，童念所在的公司被廖云丞公司收购，二人也被迫成为同事。廖云丞得知童念多年以来还是单身，他决定开启追妻之路。为了不让童念误会，他注册了网络账号和童念做了网友，在童念遇见危机困难时，第一时间站出来保护她。二人一起经历了职场陷阱、职场性骚扰等事件，又联手解决反派之后，最终廖云丞追妻成功，有情人终成眷属。

　　拥有不死之身的“鬼怪”金侁（孔侑 饰），为了结束自己无限循环的生活必需找到一位人类新娘，却在寻找途中阴差阳错与患有失忆症的阴间使者王黎（李东旭 饰）开始了奇妙“同居”生活，两人在遇到了传说中的“鬼怪的新娘”——一个“命中注定要死”的少女池恩倬（金高银 饰）之后，逐渐展开浪漫故事。

　　讲述了当选总统的丈夫向即将成为第一夫人的妻子提出离婚要求的前所未有的事件发生后的故事。在距离总统就任仅剩67天的时间里，快速描绘了在总统当选人夫妇令人窒息的矛盾中爆发的政治圈阴谋和家人的秘密。