该季依旧以Pfeffermans一家为主角。故事延续第一季时间线，Mort的大女儿Sarah终于决定与女友Tammy结婚，并举办了一场盛大的白色婚礼。
ABC正式宣布续订剧集《19号消防局》。
As Mickey leaves for a big score in Australia, Danny steps up to the mark as the gangs new leader, but can he convince a greedy American businessman to buy the Hollywood Hills sign?
In 2262, Earthforce Captain Elizabeth Lochley is appointed to command Babylon 5. The station grows in its role as a sanctuary for rogue telepaths running from the Psi Corps, resulting in conflict. G'Kar, former Narn ambassador to Babylon 5, becomes unwillingly a spiritual icon after a book is published that he wrote while incarcerated during the Narn-Centauri War. The Drakh, former allies of the Shadows who remained in the galaxy, take control of Regent Virini on Centauri Prime through a parasitic creature called a Keeper, then incite a war between the Centauri and the Interstellar Alliance, in order to isolate the Centauri from the Alliance and gain a malleable homeworld for themselves. Centauri Prime is devastated by Narn and Drazi warships and Londo Mollari becomes emperor, accepting a Drakh Keeper under threat of the complete nuclear destruction of the planet. (Portions of the end of his reign are seen in various prescient visions throughout the series; they show Mollari and former nemesis (and later friend) G'Kar sixteen years in the future dying at each other's throats, seemingly out of their grudge. It is gradually revealed that there was a much more friendly subtext, with Mollari having become a slave to the drakh rule and being tired of life; his Drakh Keeper awakens and strangles G'Kar in return. Vir Cotto, Mollari's loyal and more moral aide, succeeds him as emperor, free of Drakh influence. Sheridan and Delenn marry and move to Minbar, along with the headquarters of the Interstellar Alliance. G'Kar leaves Babylon 5 to escape his unwanted fame and explore the rim. Garibaldi also marries and settles down on Mars. Most of the other main characters leave B5. Nineteen years later on the verge of death, Sheridan takes a final trip to the obsolete Babylon 5 station before its decommissioning. Sheridan apparently dies but is claimed by the First Ones, who invite him to join them on a journey beyond the rim of the galaxy. Babylon 5 station is destroyed in a demolition shortly after Sheridan's departure, its existence no longer necessary as the Alliance has taken over its diplomatic purposes. This final episode features a cameo by Straczynski as the technician who switches off the lights before Babylon 5 is demolished.
在第三季中，团队与一个偷取人们地下清洁水源并将其变为肮脏金钱的权力掮客展开对抗，与一个在小镇中既是法官又是陪审团的市长斗智斗勇，设法躲避一个在骗局中半路追上他们的目标，智斗一个兼营国际敲诈的台球高手，并揭露一个剥削童工的工业家。与此同时，他们还得应对来自过去敌人的精密复仇计划，以及处理新的人际关系所带来的后果。但无论面对什么挑战，只要有人需要帮助，他们总会提供……“天赐之力”。
故事讲述20世纪40年代，芭芭拉皇后号从巴西里约热内卢启航，船上乘客各个怀有目的，且有着不为人知的秘密。惊涛中暗藏未知与危险，无人能置身事外。
