Scarlett Sage is poking around her bedroom closet, looking for her geometry book. She finds a box of her old books and begins searching through them, pausing as she comes across a black hardcover book. She's confused because she's never had a diary -- at least not one that looks like this. Curious, she opens it, reading the name inside and discovering that this is her step-mom Reagan Foxx's diary!
Her curiosity only grows as she flicks to the first entry. Passionate words are scrawled across the pages, detailing a tantalizing tryst with a mysterious woman. Scarlett is surprised to learn that her step-mother's a lesbian, but can't put the book down. She continues reading the entries, soaking in the erotic nature of Reagan's personal thoughts. The diary even has entries about her being eaten out by the mystery woman!