Voyager's Return and the Blow to the Borg

In 2378, almost seven years after being stranded in the Delta Quadrant, the USS Voyager was still decades from home. Then an older Admiral Kathryn Janeway arrived from a future in which the journey had taken twenty-three years and cost the lives of several crew members, including Seven of Nine. She brought advanced technology and a plan to change that outcome.

The admiral wanted Voyager to use a Borg transwarp hub hidden inside a nebula to reach Earth at once. Her younger self insisted on destroying the hub as well, sparing others from the Borg. The admiral let herself be assimilated, infecting the Borg Queen and the Collective with a neurolytic pathogen, while Voyager, protected by armour from the future, flew into the network.

The hub collapsed and the Queen was destroyed. Voyager emerged from a Borg sphere close to Earth, where a Starfleet fleet escorted the ship home, as B'Elanna Torres gave birth to her daughter on board.