"Uncle, please... don't bully my sister... I'll protect her." Shion, a sister who cares deeply about her little sister Moe and has a strong sense of justice. Knowing this, the perverted uncle threatens to touch Moe if she doesn't do what he says... Shion stands up to him, determined to shield her sister. Desperate to help Moe, Shion agrees to anything that might make Uncle happy. She shakes her ass and gets dosed with some kind of stimulating medicine that messes with her thinking... And then, Uncle takes advantage of her helpless state by brutally fucking her and creampie her without mercy while shooting his load deep inside her womb.