These two young muscular guys who are regular attendees at the gym, are asked to submit to what potentially will be quite a lot more additional strain on their bodies than what they get in a normal gym session, most especially on their asses. After stripping the two boys perform physical exercises and show off their muscles. Then Petr is severely strapped on his well sculptured ass while he leans on the back of his friend, following this it becomes the turn of Justis, he too is severely strapped on his equally well sculptured ass while he leans on the back of his friend. When in an arm-wrestling contest Petr loses to Justis, he must pay the price by submitting to a harsh punishment. After randomly choosing cards that decide their fate, they receive a painful punishment spanking by hand while over the Master's knee and on top of one another.