Aqua

Emily wanted the full experience; she needed to know what it was like. Reaching behind her back, she slipped her hands into the metal mesh and grasped the bar across them. She had deliberately not oiled the wrist cuffs since she they obviously weren't releasable by the wearer and didn't want them to close by accident, but used her right arm to check that she could reach the unlocking latch before locking the left cuff. With a resolve she closed the mask's eyelids, plunging herself into darkness and slipped her right arm up into its cuff.

Emily was so turned on right now the twanging need of her nipples and clit were like electric shocks, and she was surprised she could not hear juice squirting out of her crotch. Emily walked to what she assumed was the midpoint, turned and continued to back up. When the slack in the chain started to be taken up her eyes flew open behind their metal lids - the dildo was growing! She pushed back stronger and the pleasant feeling started giving way to pain as the studs continued to expand out from the dildo's shaft. It turns out that while two determined slaves could probably touch arse cheeks, there would be a price to pay. Reaching the edge of the lake, Emily stopped in a safe distance. She wondered how deep it went...

Steaming gently in her metal pressure cooker, the chain had become taut again, so she began backing down towards the pillar. Her fantasy was in full swing. In her mind she would be punished if the Mistress (With these gags it had to be a mistress surely?) caught her toys not at their pillars, and what was that? Her footsteps! Hurry!

She was almost back to her pillar when she stepped on the chain. The hobble chain snapped tight and for a moment she almost held her footing, but momentum and gravity weren't to be outdone and with a very well muffled squeal, Emily went crashing against the pillar and onto the floor. She didn't hear the clicking of the cuff and the zip of the plate ratcheting up the track all the way to a tight reverse prayer position...