This has the vibes of "Trick or Treat, Scooby-Doo!", despite predating it by seven entire years. Nothing really seems to matter and the logic behind jokes seems to change on a whim.
So the setup for this one is that the Scooby gang wins free tickets to be among the first people to take an interstellar cruise and end up stranded on the moon as they are hunted by a not-quite-Xenomorph.
One ongoing joke is that Fred thinks his space suit is really cool and refuses to take his helmet off; the joke being that he can't hear people with the helmet on. Except... sometimes he can? And whether or not Fred can hear someone or not changes completely at random. Those kinds of extremely dumb, low-hanging fruit jokes are all over this thing.
Nobody in this movie seems to enjoy it. Velma's skepticism comes off as being a nagging buzzkill in the worst ways. She's constantly being harassed by a paparazzi TV show host and jealous that one of the space crew seems to think Daphne is the smartest member of the gang. And that whole plot point, that Daphne is somehow smarter than Velma, is obviously never going to stick in a series that's 60+ years old. And Fred falls back into the role of everyone barely tolerating his dopey antics.
Most of the supporting cast is annoying, too, from the Steampunk-themed Elon Musk stand-in, to the paparazzi guy, the sports star, and the alien conspirator. A lot of them are written to be funny, but they come from the class of being annoying as a substitute for comedy. It's a lot of facepalm humor.
Also on the list of frustrations: Jennifer Hale playing two different characters and doing the same voice for both of them, barely an octave apart.
There are honestly a million ways to pick this movie a part. At least the animation's pretty decent, and the alien attack scenes are fun. But when it comes to the rest? Not much of a fan, and I'm starting to wonder if I'm the problem, or if most of the people who put these movies together just don't care.
