The Enterprise crew seeks out another of the Lost Worlds and finds it decimated by one of its old enemies.  Captain Trask and his crew must weight their mission against the oldest of Starfleet's regulations:  The Prime Directive.  Will he liberate Cait and bring the Federation back to the brink...

The Enterprise is dispatched to Orion in order to negotiate new trade agreements with the secretive Orion government. Winfred and Niles must overcome their tense relationship in order to make certain that the negotiations succeed, while in orbit, the Enterprise deals with problems of her own. ...

The appearance of an old-style Starfleet shuttlecraft leads Trask and his crew a hundred years into the past... but history is very different from how the crew remembers it. Facing a Starfleet that is now his enemy, can Trask lead his people back to their own time? Listen: Star Trek: Lost...