Maria drops to her knees.

Whilst Ultramom was flat on her back, Maria (who, unbeknownst to Ultramom knew what substances nullified her powers) dropped to her knees and retrieved a buttplug from under her desk that was made from one of those materials.

After using some lube, she lined up the plug and eased it in. Ultramom gasped as she felt her ass being invaded.

"Do you like your plug, it was a gift from my dear friend Dr Bluder!"

Ultramom slumped back on the desk, a combination of lust and shame enveloping her. Her pussy involuntarily juicing at the thought of just how helpless she was and secretly at what Maria was going to do to her.

Maria stood up with a smirk on her face, taking off her jacket as she did.

"You are really screwed, you just don't know how bad yet."

Maria quickly shed her blouse and bra, revealing her pert D-cup breasts before slowly undoing and removing her trousers.

"W-Why are you wearing men's boxers?"