Kathryn Janeway is the captain of the USS Voyager and the main protagonist of Star Trek Voyager. She took command of the starship voyager in order to locate a missing Maquis vessel, the Val Jean.
She and her crew, aboard the USS Voyager were flung 70,000 light years into the Delta Quadrant. She tells her crew that they will begin their own joruney for their seven year return back to the Alpha Quadrant. She is encountered with Q and a female version of Q. She was captured by the borg, but she eventually returned back to the starship voyager. After Kes's departure, she allows Seven of Nine to the voyager crew. She and her crew discovered another starship that was flung into the Delta Quadrant, the USS Equinox.
She was captured by the Quarren, but she was freed.
In the end, she and her crew finally headed back to the Alpha Quadrant, with the help of a future version of herself. Voyager was able to inflict heavy damage on the Borg, and using a Borg transwarp conduit travelled back to Sector 001 from the Delta Quadrant. Fearing a Borg incursion, a task force was sent to intercept the Borg sphere that came out, which was destroyed by Voyager. This fleet escorted Janeway and her crew back home.
Shortly after Janeway returned to Earth, she was promoted to Vice Admiral by Admiral Owen Paris. She took an assignment at Starfleet Command while the newly promoted Captain Chakotay was given command of Voyager. In 2379 she ordered Captain Jean-Luc Picard to proceed to Romulus to meet with the new Romulan Praetor Shinzon.