Professor Kendra has always been a hands-on teacher and classmates Misty and Sydney love this about her. When discussing this with her Kendra tells them about hand gagging and how fun it can be and sensual. Misty and Sydney have never done this before and are intrigued they then ask the professor to teach them. She teaches them different hand-over-mouth positions and techniques. Being the "Hands-On" teacher that she is Kendra joins in having Misty and Sydney cover her mouth and her covering theirs.
All of them enjoying it end up kissing each other.