Synopsis
The 5th Sector was structured around one man's journey through an alien invasion BUT telling it in a single continuous scene as the viewer goes where the main character goes from beginning to end.
You might also like

After being punished for retreat from combat, Ranger David Martel is given command of the Liandra, a haunted 20-year old Minbari fighting ship. He's escorting ambassadors to a secret archaeological site, the oldest city on record and a clue to a dangerous ancient race.
Babylon 5: The Legend of the Rangers - To Live and Die in Starlight

The feature-length pilot for this Emmy award-winning show. Babylon 5 is the latest in a series of space stations built by humans. The Vorlon ambassador, Kosh, has been poisoned. It is the new commanding officer, Jeffrey Sinclair, who has the responsibility of finding the culprit. Otherwise, the space station will fail in its role of bringing many alien races together.
Babylon 5: The Gathering

This instalment of Babylon 5 is in two parts: the first is about an entity that has possessed a worker. Colonel Lochley prevents a priest from performing an exorcism. The host is returned to Earth. The second has Galen trying to dupe President Sheridan into assassinating the future Centauri emperor to stop him from attacking Earth in around 30 years time.
Babylon 5: The Lost Tales - Voices in the Dark

Susan Ivanova discovers a derelict spaceship in hyperspace. They tow it back to Babylon 5, then strange things start happening. People are being telepathically taken over by aliens from another (third)space.
Babylon 5: Thirdspace

As they enter sophomore year at Monster High, Clawdeen Wolf, Draculaura and Frankie Stein face new students, new powers, and an even bigger threat that could not only tear their friendship apart but could change the world forever.
Monster High 2

A group of Soul Hunters come to Babylon 5 demanding the return of something that was stolen from them.
Babylon 5: The River of Souls

Before they can complete renovations on their new inn, a father and daughter are visited by a woman seeking immediate lodging for her strange group of travelers.
Timescape

An underground MMA fighter must confront his sister and his past in an adventure through parallel universes
Parallels

Londo Mollari, the Centauri Emperor, recounts the initial contact between the Humans and Minbari, which resulted in a major incident and subsequent war, for an eager pair of youngsters wanting a story about love and conflict.
Babylon 5: In the Beginning

SG-1 searches for an ancient weapon which could help them defeat the Ori, and discover it may be in the Ori's own home galaxy. As the Ori prepare to send ships through to the Milky Way to attack Earth, SG-1 travels to the Ori galaxy aboard the Odyssey. The International Oversight committee have their own plans and SG-1 finds themselves in a distant galaxy fighting two powerful enemies.
Stargate: The Ark of Truth

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.
Flash Gordon

Allies of the Shadows seek revenge against humanity. This movie sets up the series, "Crusade," the sequel to "Babylon 5."
Babylon 5: A Call to Arms

After a construction project begins digging in their neighbourhood, best friends Tuck, Munch and Alex inexplicably begin to receive strange, encoded messages on their cell phones. Convinced something bigger is going on, they go to their parents and the authorities. The three embark on a secret adventure to crack the code and follow it to its source, and discover a mysterious being from another world who desperately needs their help. The journey that follows will change all their lives forever.
Earth to Echo

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.
Stargate SG-1: Children of the Gods

After a fatal test shuts down their project, a disgraced team of scientists enters the criminal underworld to rebuild a forbidden space-bending engine that could rescue humanity or annihilate it entirely.
Space/Time

When an all-powerful Superintelligence chooses to study the most average person on Earth, Carol Peters, the fate of the world hangs in the balance. As the A.I. decides to enslave, save or destroy humanity, it’s up to Carol to prove that people are worth saving.
Superintelligence

When an alien race and factions within Starfleet attempt to take over a planet that has "regenerative" properties, it falls upon Captain Picard and the crew of the Enterprise to defend the planet's people as well as the very ideals upon which the Federation itself was founded.
Star Trek: Insurrection

Amy Pond and Rory Williams are trapped on a crashing space liner, and the only way the Eleventh Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs of Christmas Eve?
Doctor Who: A Christmas Carol

Three astronomers accidentally intercept what they believe to be a signal from a distant alien civilization, but the truth is even more incredible than any of them could have imagined.
Cosmos

Jonathan is a young man with a strange condition that only his brother understands. But when he begins to yearn for a different life, their unique bond becomes increasingly tested.