During summer break, a female science student returns home and, tired from her usual studies, seeks new forms of relaxation by indulging in observing her obedient servant. For this curious girl, the entirely unfamiliar and unconventional experience feels incredibly stimulating and enjoyable. What fascinates her most is playing with penis-shaped toys, particularly the game of dragging the cock around like livestock—a form of animal play that excites her as if she's made a thrilling new discovery.