The complete fourth season of the popular science fiction drama series. In 'The Hour of the Wolf', news that Captain Sheridan died while trying to destroy Z'Ha'Dum filters back to the station, as do stories of Garibaldi's abduction by the Shadows. Morden induces Emperor Cartagia into allowing Shadow Vessels a base on the homeworld, and the new Kosh continues to surprise everyone with his difficult attitude. In 'Whatever Happened to Mr Garibaldi?', a mysterious being reveals the true origins of the Vorlons and the Shadows to Captain Sheridan (who may, or may not, be dead). G'Kar is captured during his search for Garibaldi (who is languishing in a dark cell - being interrogated by a disembodied voice). Ivanova and Marcus set out to find more of the First Ones who they believe will be instrumental in defeating the Shadows. In 'The Summoning', Marcus and Susan continue their search for the First Ones, but only discover a huge and vengeful fleet of Vorlon ships hidden in hyperspace. Meanwhile, Sheridan returns from the dead and Zach continues his search for Mr Garibaldi. In 'Falling Towards Apotheosis', The Vorlons let it be known that they intend to destroy any planet that has ever served the Shadows. This means Centauri Prime is on the hit list, but the obviously insane Emperor Cartagia is oblivious to the threat. Londo and Vir hatch a plan to unseat the Emperor, with the help of the captured G'Kar. In 'The Long Night', Sheridan has to decide whether to allow one of the Ranger's ships to perish in return for setting a trap that will save 6 billion innocent people. Meanwhile, Susan and Marcus search for more First Ones and Londo launches his own plan to remove Cartagia from the Centauri throne. In 'Into the Fire', the battle between the Vorlons, the Shadows and Sheridan's forces begins in earnest - and the mystery surrounding the ancient races is revealed. In 'Epiphanies', Bester turns up and offers to help Sheridan in return for access to Shadow technology. Garibaldi resigns his position as Chief of Security and goes freelance while Londo returns from Centauri Prime. In 'The Illusion of Truth', Sheridan allows a news-team from ISN to film the running of the station. However, when the report is broadcast he sees that it has been edited to give the impression that Sheridan has gone mad, is under the control of the Minbari and that the Babylon 5 medical staff are experimenting on human subjects. Garibaldi doesn't help by criticising Sheridan as a megalomaniac. In 'Atonement', Delenn is summoned back to the homeworld to justify her relationship with Sheridan, but finds out far more than she had bargained for as revelations emerge about her past actions. In 'Racing Mars', Garibaldi reacts badly to Sheridan's criticisms and joins forces with some Earth Force spies, agreeing to betray his captain to them. Meanwhile, Marcus and Doctor Franklin reach Mars during their mission to gain the support of the resistance. In 'Atonement', Delenn is summoned back to the homeworld to justify her relationship with Sheridan, but finds out far more than she had bargained for as revelations emerge about her past actions. In 'Racing Mars', Garibaldi reacts badly to Sheridan's criticisms and joins forces with some Earth Force spies, agreeing to betray his captain to them. Meanwhile, Marcus and Doctor Franklin reach Mars during their mission to gain the support of the resistance. In 'Lines of Communication', Delenn is ordered to eliminate the Drakh, servants of the Shadows, after they launch a series of attacks. Meanwhile, Franklin and Marcus continue to battle against the Earth forces on Mars. 'Conflicts of Interest' sees the embittered Chief Garibaldi siding with industrialist William Edgars against the Alliance in his mission to destroy all telepaths. On Mars, Franklin and Marcus convince the Resistance to join Babylon 5. In 'Rumours, Bargains and Lies', Delenn meets Neroon to avert civil war on Minbar. Meanwhile, Sheridan plans to free the Alliance from the threat of the Drakh, servants of the Shadows. 'Moments of Transition' sees Delenn forced to fight to the death to win the right to lead the Minbari. Sheridan decides to hit back after Earth cruisers destroy 10,000 civilians. In 'No Surrender, No Retreat', Sheridan moves against Earth's fascist government by taking an Alliance fleet to Proxima, where they engage Earth forces directly in combat for the first time. 'The Exercise of Vital Powers' sees Sheridan's former ally Garibaldi beginning his self-imposed exile on Mars by meeting with billionaire medical corporation owner William Edgars. In order to stop Earth Force President Clark without taking direct military action, Garibaldi agrees to betray Sheridan to Edgars. In 'The Face of the Enemy', Sheridan's offensive against the fascist Earth forces gains momentum, but he is unaware that his former security chief Garibaldi is making his own moves to overthrow the government. In allegiance with industrialist William Edgars, Garibaldi kidnaps Sheridan's father, in order to lure Sheridan to Mars. 'Intersections in Real Time' sees Sheridan falling into Garibaldi's trap, imprisoned on Mars and subjected to torture, starvation and sleep deprivation. Sheridan's captors want him to confess to treason, terrorism and sabotage so that they can use him as a propaganda weapon on Earth. In 'Between the Darkness and the Light', Mr Garibaldi is saved from certain death by an old friend, and realizes that Mr Bester was responsible for his betrayal of Sheridan. Commander Ivanova's fleet of White Stars find themselves confronted by a flotilla of destroyers equipped with Shadow technology when they emerge from Hyperspace. 'Endgame' sees Sheridan taking a dangerous gamble to defeat the remaining hard core fleet still loyal to the corrupt Earth regime, while President Clark plays his last hand. In 'Rising Star', former enemies are united in the new Alliance, but Sheridan still finds himself facing a court martial for leading the original insurrection against Earth. Finally, 'The Deconstruction of Falling Stars' begins a century later. In 2362 opinions are still divided as to the role played by Sheridan in the conflict. Another five hundred years on, Earth is in the hands of someone who strongly resembles Michael Garibaldi. By 3262, Earth has a medieval culture after being reduced to ashes five hundred years previously. Finally, Earth evolution takes another leap - some 1,000,000 years in the future.