A hot but frigid scientist has asked over a legendary stud to help with an experiment. He assumes she wants to fuck for hours, but she has other plans. He finds himself tied to a strange machine which will transfer his sex energy to the scientist. Sadly, his sexual energy is the source of his legendary stamina and thus the process will turn him into a permanent premature ejaculator. He is taunted by the scientist as she becomes voraciously sexual, while he loses his sexual prowess forever. As a final humiliation she gives him a hand job, proving that he can't even last for 5 strokes now.