It was a stupid dare. You never anticipated it could go so wrong. Your friends thought it would be funny to dare you into going down an abandoned well, and trusting them not to do anything stupid, you agreed. You could tell something was off when they giggled and whispered, and then they let go, sending you diving to the bottom and hitting the cold metal ground.
Your head hurts. Who knows how long you've been down there. The bucket lift is gone, too, and you realize there's some sort of a tunnel system down here. You decide to investigate.
After a while walking, you find a rusted metal door, and you open it. You were immediately greeted with the sight of an entire mental care facility underground. You tried to back away but were stopped by a woman in a lab coat and chloroformed.
As you wake up again, with a headache and locked in a padded room, you can't help but notice the strange decor in the room. Pictures of feet and feet anatomy litter the walls, and footprints are planted on nearly everything you can see. The door is very heavy and locked tight, and it seems they will try to brainwash you into a foot-related mindset and addiction.