The fifth TNG movie that never was

Spiner himself explained,...

https://memory-alpha.fandom.com/wiki/Undeveloped_Star_Trek_projects#Nemesis_follow-up

Undeveloped Star Trek projects

Many projects have been partially developed for Star Trek, beginning in the 1970s. There have also been deleted scenes for completed projects. The God Thing (1975) Star Trek: Planet of the Titans (1976-1977) Star Trek III (1980) Star Trek: The First Adventure (1989) Star Trek: IMAX (1997) Star Trek: The Beginning (2005) Star Trek 4 (alternate reality) (2019) The notion of a Star Trek film was originally considered amid the making of TOS Season 2, while DeForest Kelley, Gene Roddenberry, and Greg

Memory Alpha

. He goes back to the moment before Data blows up and takes him back to get Kirk and Spock

This reads more like a treatment for Star Trek Generations. as if they realized how stupid that movie is, and wanted to fix it