Trapped in a shattered future, Archer and Daniels must find a way to return him to his own time and restore the timeline. The Suliban capture the Enterprise and interrogate the crew.

T'Pol tells the story of her great-grandmother, who was part of a crew of Vulcans who crash-landed in a small town on Earth in the 1950s.

Starfleet's first encounter with Romulans leaves the Enterprise trapped in a minefield, where Archer must disarm a mine that has pinned Reed to the ship's hull.

The ship puts in for repairs at an entirely automated repair station, but the crew learns that there is much more than meets the eye when a member of the crew is killed.

Captain Archer spends the night in sickbay with Doctor Phlox after Porthos picks up a deadly virus on an alien world.

The crew finds a dilithium mining colony that is being exploited by a gang of Klingons, and tries to help the colonists fight them off once and for all.

T'Pol is sent on a secret mission to capture a Vulcan fugitive from her past, and Archer must help her confront her repressed memories.

While attempting to retrieve a Starfleet communicator left behind on a planet, Archer and Reed are taken into custody by an alien government and accused of espionage.

Radiation from a stellar phenomenon causes erratic and obsessive behavior among the crew, leaving T'Pol responsible for saving their lives.

A transporter mishap leads Ensign Sato to a crisis of identity, as she slowly begins fading out of existence.

Trip rescues an stubborn alien princess from her kidnappers, and the two find themselves on the run -- while Archer must devise a plan to learn their whereabouts.

The crew must take refuge from a radioactive storm in the cramped corridors of the ship's nacelles -- but soon discover that a group of aliens is trying to take over the ship.

Trip is stranded on a barren moon with a hostile alien, where the impending sunrise threatens to scorch them to death.

Archer learns that T'Pol has contracted a disease from a mind meld, and confronts the Vulcan medical establishment's bias against it.

The Andorians call in Archer to mediate their conflict with the Vulcans over a disputed planet.

Enterprise discovers what seems to be a small spacecraft from the future, and are caught between the Suliban and Tholians -- who both demand the vessel be handed over.

Archer and Tucker find themselves mistakenly arrested and sent to the penal colony Canamar, but the prisoners on board the transport ship stage a revolt.

Enterprise is visited by non-corporeal beings that take up residence in the bodies of the crew, and that have mysterious motives.

Archer is put on trial by the Klingon Empire, and his only hope of escaping the death penalty lies with an aging and disillusioned Klingon lawyer.

After the death of his father, Travis Mayweather returns home to visit the cargo ship on which he grew up, where his brother has assumed command.

While Trip, Reed and Mayweather attempt to retrieve a group of Denobulan geologists from an underground lab, Dr. Phlox meets a patient who refuses a life-saving procedure because of his people's hatred for the doctor's species.

The crew meet a friendly, tri-gendered species, but relations are threatened when Commander Tucker helps an oppressed Vissian aspire to be more than her people demand that she is.

Enterprise comes up against a 24th century threat after a group of scientists discover a crashed Borg ship in the Arctic Circle on Earth. Phlox fights for his life after being infected with Borg nanoprobes.

Archer tells T'Pol of his friend A.G. Robinson, his competition in the early days of Starfleet -- and the man who helped him keep Earth's warp program on track after a disastrous test flight of the first warp 2 ship.

Captain Archer is captured by a Tellarite bounty hunter, who intends to collect on the Klingon's reward following his escape from Rura Penthe. An alien pathogen prematurely triggers T'Pol's mating cycle.

Enterprise is recalled home after a vicious attack on Earth. The crew begins a new mission into a dangerous sector of space -- but must get past the Klingons first. T'Pol is forced to reconsider her loyalties.