A Czech gym teacher, all muscles and authority, invites two students for a 'physical' in his office. The twink and a straight, naked gay man, both nervous and excited, submit to his expert touch. The teacher's hands explore their firm bodies, lingering on cocks that grow hard under his gaze. The twink, unsure of his desire, watches as the straight man's cock is sucked and fucked, his own dick twitching with curiosity.