Terrible. It's like watching a mish-mash of Godzilla, Kong, Transformers, Jurassic Park, Starship Troopers, Tron, Stranger Things, Stargate & Pacific Rim.
At one point massive Turkey-Bat creatures are picking off Starship Troopers, in some other world accessed through a wormhole or something?...that has upside down mountains in the sky... all while two kids & a bloke (who you can't understand when he speaks) run about doing... errr, nothing!?
You can throw Lethal Weapon into the mix as Kong even does a Mel Gibson and bangs his own dislocated shoulder back in.
Absolute Garbage!