Abigail sends her home with an assignment

"So, are you ready for your assignment?" Abby asked after they'd cleaned up.

Still a little lightheaded from sex, Ellie nodded.

"Say 'yes, mistress,'" Abby prompted.

Ellie's eyes went wide, but she did it. "Y-yes, mistress."

Abby put a finger in the air. "Number one. You're not going to cum until the next time we see each other. I've got a busy week with my summer job, so that probably won't be til next weekend."

Nearly a week? Eleanor felt rising panic - but she also felt her cock harden.

"Two." Another finger raised. "Every morning when you wake up, you're going to spend at least half an hour edging. However you normally masturbate is fine, but you won't cum. Get as close as you can, as many times as you can."

Ellie was speechless. Her mouth fell open, her cheeks and chest flushed, her heart rate and breathing intensified, and she just sat there listening.

"And three. By the time you see me next weekend, I know you're going to be begging me to fuck you. And I will. But only under one condition."

"W-what is it?"

Abigail pointed her three fingers down at Ellie's crotch with a smug grin on her face. "I want that pretty cock locked away."

Ellie's face went white. "W-w-what?" She knew exactly what Abby meant.

Abby grew close, staring Ellie in the eyes. Ellie felt her breath on her lips. "I want you to lock your cock in a cage. I want you to feel helpless and submissive. And if you do that before next weekend, if you're a good girl, I'll fuck your ass until you cum."

Ellie was frozen. She couldn't break eye contact or speak.

"If you don't think you can do this," Abby continued, "tell me. But if you can, if you want to be my good girl, say 'yes, mistress.'"

A beat. Two beats. "Yes, mistress," Ellie whispered.