At the time, the studio was in pre-production on Star Trek 4: The Voyage Home, a film in which the Starfleet crew would visit contemporary San Francisco as part of their mission to take some whales to the future with them. Paramount thought this would be a perfect opportunity to put Eddie Murphy into the world of Star Trek. The script would have had Eddie Murphy play a conspiracy theorist marine biologist who would help the Starfleet crew with their mission. As a result, a more lighthearted script was produced. When it was presented to Eddie, he wasn't happy. He didn't want to play a 20th Century character; he wanted to actually be in Starfleet. Eddie had thought he would be playing a serious character in a serious Star Trek movie. Paramount didn't think the public would want to see him in a serious role and they weren't willing to risk finding out if they would. Eddie was encouraged to choose a different project and he made The Golden Child instead.
Meanwhile, Star Trek 4 went into production retaining its more lighthearted tone, though strangely recasting the Eddie Murphy role with Catherine Hicks. She wouldn't be a conspiracy theorist, however. The film did amazingly well; earning the best box office of the films starring the original cast. This would inspire Paramount to give the greenlight to an all new television show- Star Trek: The Next Generation.