Arale, a loyal bunny girl, was trusted by her master as a skilled dealer at the underground casino held in the mansion. However, after losing a game in which the master bet all his money, he lost all of his fortune and offered the mansion and Arale as collateral to some devilish men, who made her their sex slave. Arale maintains a resolute attitude and refuses to give in, but every time she is violated with forced deep throat service, humiliating bondage and toy play, and impregnating gang rape, her reason crumbles and she seeks pleasure herself, sucking on vile dicks...