"Message in a Bottle" is an episode from the fourth season of Star Trek: Voyager. The starship Voyager (NCC-74656), an Intrepid-class starship. ...

Using a recently discovered galactic sensor net, Voyager detecs a Federation vessel in the Alpha Quadrant, the USS Prometheus. They try to transmit a distress signal but it is only reflected back at them. But as a stronger signal may be able to make it they send the holographic programme of the Doctor to the ship. In the fictional Star Trek universe, the United Federation of Planets is a federation of more than 150 member planets and thousands of colonies, based in the Alpha and Beta Quadrants of the Milky Way galaxy. ... In the fictional Star Trek series, the Milky Way Galaxy is divided into four quadrants, which are further subdivided into sectors. ... USS Prometheus is the name of several starships in the fictional universe of Star Trek. ...

Upon arrival, the Doctor discovers that Romulans have taken over the ship. They test a new multi-vectored assault mode (in which the ship splits into three pieces) and damage a Nebula Class Federation ship. The ship's systems are all locked down requiring security clearance for everything except the ship's own medical hologram. The Romulans, a fictional race in the Star Trek universe, are descended from Vulcans and are characterized as being deceitful, cunning, and treacherous. ... The USS Sutherland (NCC-72015) in 2368 In the Star Trek fictional universe, the Nebula class is a common type of starship used in the mid-24th century by Federation Starfleet. ...

A Romulan brings in an injured crew mate and demands the Doctor fix him before leaving.

The Doctor activates the ship's EMH (Andy Dick). The ship's EMH then tries to deactivate himself and wait for a Federation rescue. The Doctor convinces him none is coming and that they have to take back the ship themselves. Andy Dick (born 21 December 1965) is an American television and film actor. ...

The Doctor pretends the injured Romulan was infected and that the infection may have spread to the others, and he begins scanning the bridge crew. But a Romulan notices that the Doctor wasn't scanning the Romulans at all and they interogate him, just as the ship's EMH floods the ship with a tranquilizing gas. Missing image Command bridge of the Charles de Gaulle aircraft carrier Bridge of the brigantine LEtoile The bridge of a ship is an area or room where the ships navigational controls and other essential equipment related to ship operations are housed and operated. ...

The ship is now theirs, but they have reached the rendezvous coordinates and Romulan ships have come to take the Prometheus. But then the Federation ships arrive to do battle. The ship's EMH fires a torpedo that slowly flies out and hits a Federation ship. They decide to play with multi-vectored assault mode and target the Romulans, emerging victorious.

The Doctor informs Starfleet of Voyager's status and goes home, telling the crew they are no longer alone.