The Enterprise crew unknowingly receives a new first officer who claims that the Federation is at war with another species.
While en route to the source of a subspace distress signal coming from a desolate moon, Data, Troi and OBrien take over the bridge and force the ship to change course.
When Worf is paralysed in an accident he must undergo drastic back surgery. However, this experimental technique may cost him his life.
Riker must defend a Jnaii named Soren, with whom he shared a romantic encounter when her people find out that she broke the most sacred rule of her civilisation, and had shown leanings to the female gender and sexuality.
While exploring the Typhon Expanse, the Enterprise is caught in a time warp in which they are repeatedly destroyed while colliding with another starship.
Wesley is involved in a cover up at Starfleet Academy when a cadet is killed and five shuttles are destroyed during a forbidden manoeuvre performed by Starfleet Academys best cadets.
While exploring a strange form of energy in a region of space, a little girls imaginary friend becomes real and places the Enterprise in great danger.
An injured Borg is discovered and brought back to the Enterprise where he is repaired by Dr. Crusher and befriended by Geordi, who names him Hugh. Soon, Hugh starts showing signs of individuality.
While the Enterprise helps a Romulan science vessel, an accident occurs which forces Geordi LaForge and Ro Laren slightly out of phase, causing them to become undetectable to everyone but each other.
Picard is struck by a beam of energy from an alien probe, which renders him unconscious and places him in the life of an Iron worker on the planet Kataan, with no memory of who he used to be, or how he arrived there.
Datas head is uncovered in an archaeological dig on Earth, where evidence is also found that aliens may have been on Earth as early as the 19th Century. Using modified technology, an away team follows Data into the late 1890s to investigate.