Release Message:  The starship Defiant is caught in a type of "quantum-bubble" surrounding a planet inhabited by the descendants of the Defiant's crew. Instead of passing through its energy barrier, the ship was thrown back in time two centuries and crashed with no hope of contacting the Federation or repairing the ship. Starring Avery Brooks.

Description:  The starship Defiant is caught in a type of "quantum-bubble" surrounding an inhabited planet. After investigation, it is discovered that the inhabitants are the descendants of the Defiant's crew. Generations of descendants have been living on the planet for many years and their own history began when the Defiant tried to escape from the bubble. Instead of passing through its energy barrier, the ship was thrown back in time two centuries and crashed with no hope of contacting the Federation or repairing the ship. Faced with that reality, the small stranded crew of the Defiant (including Dax, Sisko, O'Brien, etc.) decided to remain and establish a society. Wikipedia: An accident causes the crew to meet their own descendants - and presents them with an ethical dilemma. (more below) The DS9 cast discovers a small colony on a remote world that was originally populated by them 200 years earlier due to a time-travel accident with the Defiant. The current colonists lives depend on making sure that accident happens again, even though they've now forewarned the crew that it will happen. Each crew member needs to decide if they are willing to give up their lives on DS9 in order to preserve the history of the colony.