There's an old adage in the Star Trek fandom: the "even" numbered movies are good, while the odd numbers are "bad." However, feelings about the six films featuring The Original Series cast have evolved over time. While it may be the "worst" of the bunch, Star Trek V: The Final Frontier is a much better movie than fans ever gave it credit for. It tackled a heavy topic in a strange way while the studio tried to get their visual effects on the cheap.
Source：https://www.cbr.com/star-trek-v-final-frontier-better-than-fans-remember/
