Looking for a specific dark bdsm story

Hey im looking for a bdsm story i read while ago but cant remember the title. If anyone knows the name pls tell me. Tbe plot is the following:

So a woman wakes up in a cell naked I thinknornwoth a sheet on her. It’s a metal door normal bed and high up window. She has and earpiece that tells her to calm down and resisting will be bad for her. At 7am the door opens as does 3 other doors and she meets 2 girls 1 is petite and the other is a bit curvier but all nice they have breakfast and wash. The other 2 have been here before and tell her just to do what she is told. Later the 3 girl is wrapped in bondage who they unwrap and clean up she was punished for that nice and you could tell she had been spanked alot.

Basicslly slaves, 3 doms and 1 domme. They obey 1 gets punished every night but they all get used and humilated during the day. The curvy girl is a pain girl, new girl is humilated, bindage one lives leather, petite one is in costumes they become what the doms ask them to he to survive when they get released once the dom is bored they get looked after well. The woman on the earpiece was a past slave

Source: reddit.com/r/eroticliterature/comments/l5igwl/looking_for_a_specific_dark_bdsm_story