Two women dressed in black catsuits

Cheri was lucky in the way she was facing, as she could see the door, and Pamela, their aerobics teacher, and Linda's face. As Linda was facing Cheri Linda's expression was a mixture of fear and curiosity, as she could hear the door open but not see who had come in.

Standing just inside the door were two women, one maybe a year older than the girls in the class, the other was their age, or slightly younger. Both were dress in black close fitting clothing, with belts round their waists, with pouches and other items Cheri did not recognize. They were wearing dark high-tech glasses, but pushed them up and surveyed the room. The older one was holding some kind of small box in her hand, and she stayed by the door, looking calm and in control. She nodded to the younger woman, who looked a little nervous, but headed straight for Pamela.

Cheri watched as the younger pirate, as that is what the mysterious women were although Cheri did not know that, took a metal ring from out of a pouch. She opened it into two hinged halves and, taking hold of one of Pamela's arms, closed it around the arm just above the elbow, She took another ring and placed that around Pamela's wrist. These were followed by rings around Pamela's other upper arm and wrist, and then the pirate took one of Pamela's wrists, behind her back, and pulled it up until it touched the band around the opposite upper arm, where it seems to stay in place, as the pirate did the same with the other wrist and upper arm. Looking more confident now the pirate moved out of Cheri's sight, heading for the first girl in the front row.

Cheri could only strain her ears to work out what was going on for a while with sounds of bodies being moved, and little metallic clicks. The pirate by the door watched impassively. Then the younger pirate came in sight again, finished off the front row, moving swiftly and confidently now, as she knelt over each un-resisting victim, tugged her arms into place behind her, attaching the rings and moving on. Then the ringing pirate started on Cheri's row. She could see the girl getting closer, but there was nothing she could do about it. Linda looked surprisingly calm as her arms were pulled behind her and held with the rings, although she had seen the fate of the front row, so it can not have been a complete surprise.

Now it was Cheri's turn. She was lying with her right arm under her body, and the pirate reached under Cheri, and pulled her arm out, touching her breast in the process. Cheri and the pirate were watching each other as this happened and although Cheri was sure her embarrassment at being touched so intimately must have showed on her face there was no sign of apology or embarrassment from the young pirate, just a focussed smile as if she was doing a job, but one she enjoyed. She was also very pretty, up close.

Cheri felt metal close around her left upper arm, then her left wrist, then her right upper arm and wrist. The pirate pulled her right arm behind her back until her wrist touched the band around her left upper arm, where it seemed to lock in place. Before she could take in what was happening Cheri's left wrist received the same treatment, and the pirate had moved on. Cheri could feel that her position was making her push her chest out, and looking at Linda Cheri could see Linda's nipples erect under the thin fabric of her leotard. She blushed and looked away, trying to think of something else.