Vanessa has two stepbrothers who decided to shrink. They're tiny, but Vanessa doesn't care about their size, despite towering over them. Over the years, they've been very tight, but lately, her stepbrothers have been acting weird. Today, Vanessa arrived home and quickly realizes something is up. The two put something in her beverage to make her groggy and tie her hands and feet. They then undress her down to her bra and panties. They want to use her. Vanessa has suspected for years that the two are macrophiles, but she never thought that she could be the target of their fetish! The two threaten to keep her bound if she doesn't comply. Fearing for her safety, Vanessa obeys. At first, they explore her entire body... Then they start making her give them both oral sex, in turn and then at the same time! She sucks their small dicks against her will. But Vanessa performs eagerly, hoping that this will satisfy them and make them go away. But it doesn't. They both have something else on their mind... they want to penetrate her. They turn her from behind and, in turn, penetrate her. Their size is small, but they still have an impact. After reaching climax, they're satisfied and finally leave their giantess sister all sweaty and still tied up... 1st and 3rd pov