If I've seen it, it was so long ago I missed a lot. Which is it, without giving too much of the plot away?
Whales. Rescue.
Captain of the Enterprise saves the Universe from destruction once again...
Only thing different from every Star Trek you've ever seen are the whales...you could substitute tribbles, Klingons, demonRATS, etc.
Jen's right tho. Best of the Star Trek movies.