Xander is shocked to discover that the explicit sexual fantasies written in his stepdaughter's diary, are actually about him. An illicit affair between Nikki and her stepson becomes a source of frustration when her husband's schedule keeps interfering. Aurora's hidden attraction for her step brother reaches a breaking point when he sets out to beat up the guys harassing her at school. After John learns that his stepdaughter's boyfriend is turned on by father/daughter role play, he recommends that the two of them practice together first.