After being suddenly dumped by his beloved girlfriend, he desperately pleads, "I absolutely don't want to break up! If that's the case, I'll even be your lover!" She abruptly changes her attitude and demands, "Then show me you masturbating right now." After obeying and ejaculating on command, he is next forced to watch her have sex with her new boyfriend. Overcome with jealousy at seeing her lewd behavior for the first time, he gradually finds his own desires awakening. Though he believed an agreement to become her kept man was established, in the end, he is treated merely as a submissive male dog.