Star Trek: Enterprise: Season 3, Episode 21

3 - 21: E²

Before attempting to use a Xindi subspace corridor to reach the Xindi council, the Enterprise crew faces a bizarre encounter with their own descendants on an Enterprise. Captained by T'Pol's son Lorian, the ship warns Archer of an alien attack by Kovaalan ships. Enterprise escapes into the subspace corridor, but attack damage destabilizes the corridor, causing a time shift with the ship emerging in 2037. Will foreknowledge change anything?