Star Trek: Enterprise: Season 4, Episode 22

4 - 22: These Are the Voyages...

Commander Riker interacts with Archer's crew in a hologram of their final mission as he deals with a dark secret from his past. Six years after the Terra Prime incident, an emotional Captain Archer and the crew return to Earth to decommission Enterprise and sign the charter for the Federation, the new alliance of planets they helped forge. Enroute, Archer agrees to help his old ally Shran retrieve his daughter as the captain prepares a speech to celebrate the Federation's establishment.