You just recently purchased your FIRST chastity cage, and decided to wear it to work today. You can't wait to get home, unlock the cage, and stroke your cock after being locked up all day. To your surprise, when you open the box where you've kept the keys, they're gone! In their place is a USB stick, along with a note that says "play me". You begin playing the video on your computer and are SHOCKED when your step-sister's face pops up on the screen. Here is that video.