When Trip is dispatched to assist an alien ship with its power source problems, he is delighted to have a friendly encounter with one of the ship's female engineers. But after discovering that their special moment has resulted in his becoming pregnant, he realizes he's had an unwitting experience with alien sex. Archer and his crew must then try and return the rapidly growing alien baby to its mother.
Star Trek: Enterprise, a prequel set before the original series, follows the crew of Earth's first warp five starship. Lead by Jonathan Archer and his crew, the series follows their adventures as they explore never before seen parts of the galaxy, setting foot on new worlds and meeting new races, as well as some familiar ones.