An assassin is sent to torment and kill G'Kar, while the station celebrates different religious customs. Sinclair's former lover Catherine arrives, and the two rekindle an old relationship.
A telepath with extraordinary abilities -- Talia's former teacher and friend -- uses Babylon 5 to hide from the Psi Corp. Catherine Sakai surveys a planet against the advice of Ambassador G'Kar.
A pro-Earth group threatens the station, assaulting a Minbari poet. Two young Centauri lovers arrive seeking Ambassador's Mollari's help. A man from Ivanova's past attempts to rekindle an old flame.
Commander Sinclair is kidnapped and interrogated by Earth loyalists, who probe his mind to learn the secrets of the pinnacle battle of the Earth-Minbari War -- secrets Sinclair doesn't know himself.
An infamous war criminal comes aboard the station, claiming to hold the secret to eternal life. Sinclair is forced to protect her in the midst of accusations and demands to bring her to trial from several alien governments.
Tensions rise in the wake of the accidental death of a dock worker, and Sinclair must negotiate an agreement between the dockers guild and Earthdome to prevent an illegal strike.
A mysterious stranger seeks an audience with the station's ambassadors, and helps Mollari recover a priceless Centauri artifact. Babylon 5 defends itself and the sector from a well-organized band of raiders.
An old friend of Garibaldi's comes to the station to fight in an alien combat competition. Ivanova's former rabbi tries to help her come to terms with the death of her father.
A man seeking the mythical Holy Grail seeks assistance from the station's ambassadors, and comes to the aid of a young man in a bad situation. A group of thugs threatens the station's citizens.
A brash military officer investigates Sinclair's command decisions, threatening the senior staff with telepathic scans. Ivanova threatens to resign her commission in protest.
Sinclair and Garibaldi investigate the sudden disappearance of the body of a revered Minbari military leader. A young girl on the station begins to exhibit telepathic abilities, and must decide whether or not to join Psi Corp.
The planet beneath Babylon 5 suffers from seismic tremors, revealing the presence of an alien at the heart of a vast machine deep underground. Delenn is visited by an old friend.
Sinclair struggles to prevent an Earthforce captain from seizing the heavily-defended Epsilon 3 and endangering the station. Delenn, Draal and Londo embark on a dangerous mission to replace the heart of the Great Machine.
When Babylon 4 mysteriously reappears, Sinclair and Garibaldi lead a rescue effort to evacuate the station before it is pulled through time. Delenn receives an offer from the Grey Council.
Garibaldi investigates the death of a friend, leading him to a terrible secret that may cost him his life. G'Kar leaves the station to find out more about the coming enemy, while Delenn begins a mysterious transformation.