The content is good and spoiler-free, but it could use some touch-up. Rekall isn't even spelled correctly and the last sentence doesn't make grammatical sense. How about:

Construction worker Douglas Quaid's obsession with the planet Mars leads him to visit Rekall, a virtual vacation company that manufactures memories. When something goes wrong during Quaid's memory implant procedure, his life turns upside down, leading him to question what is reality and what isn't.

The current plot synopsis on Letterboxd is an old one that contains major spoilers, so the sooner we rectify this, the better. I'd fix it, but it's locked, for some reason.