An adaptation of the novel Old Cat, by Ni Kuang. A cat from outer space teams up with a young alien girl and her knight, along with an adventure novelist named Wisely, to fight a murderous alien that possesses people.
What follows is an over-the-top combination of body-swap delirium that leans more toward a Hong Kong adaptation of The Hidden than The Cat from Outer Space, but with touches of The Thing, Spaced Invaders, and Aliens! The Cat is an overlooked gem from the golden age of the VHS trading underground, completely remastered and packed with extras.