Tinker!Taylor manages to build a teleporter out of her watch and bug guts and teleports from the locker straight to the bottom of Old Aperture.
A bit of survival (and testing!) with some tinker bullshit ensues, listening to Cave Johnson recordings with unironic reactions to his ravings lol
Sane!GLaDOS and co, very interesting (and nice) reimagination of the Portal lore, not like I know the original all that much.
Despite being a super-duper-tinker we never really see any curbstomping, so it’s just a nice short read.