A young woman with some financial problems accepts an invite from her older sister to live with her and her husband for a while, until she gets back on her feet. Her sister is this brilliant light of positivity and success. She works a demanding job and absolutely kills it, all while maintaining stunning good looks and a truly inspiring lust for life. Her sister's husband, though, is something of a mystery. Every time they've met, he had come across as rather intimidating, even with his handsome smile. One thing is clear, he genuinely loves her sister, and she him.
When she first moves in, her sister's husband is away on a long business trip, which she's kind of grateful for. It lets her get comfortable in a new space with just her sister's familiar face present. When he gets home, though, there are long stretches with just the two of them around, as he works from home most of the time while his wife is in the office. Her sister had warned her that he could be a touch particular about things at home, but she starts to feel an oppressive air whenever it's the two of them around, like he is constantly scrutinizing her.
One afternoon, when the tension feels like it has hit a fever pitch, he corners her in her room. He explains to her that anyone living in his house, even his wife's sister, must meet his expectations. Then he begins to undress her.