The Forgotten (Star Trek: Enterprise)

"The Forgotten" is the seventy-second episode of the American science fiction television series Star Trek: Enterprise, the twentieth episode of season three. It first aired on April 28, 2004, on UPN in the United States.

Set in the 22nd century, the series follows the adventures of the first Starfleet starship Enterprise, registration NX-01. Season three of Enterprise features an ongoing story following an attack on Earth by previously unknown aliens called the Xindi - a group of five surviving races who each evolved on the same planet. The Enterprise enters the Delphic Expanse seeking to stop the super-weapon with which the Xindi intend to destroy Earth.