Mona Wales is doing laundry for the family, including her step-daughter, Riley Reid. However, the mundane chore takes an interesting turn when she discovers Riley's diary in the laundry basket. Confused but intrigued, Mona can't resist opening it up and taking a peek. She feels so distant from Riley and she just wants to get closer to her, so maybe this will give her the insight she needs to better their relationship.
She quickly realizes that this diary is much more scandalous than she was anticipating. In fact, it contains somewhat of a to-do list for the things Riley wants to do with her step-mother. These items are far from innocent, such as sucking on Mona's tits or tonguing her pussy! Mona can't help but to shift on the spot, becoming aroused from the erotic words.
Then Riley suddenly steps into the room, catching Mona reading the diary. Mona is shocked and tries to apologize, but Riley admits that she purposely left the diary for Mona to find. She's always had a crush on her step-mother but was too scared to admit it, so she wrote it all out in her diary to help cope. Now that she's 18, though, she doesn't want to have to write out her fantasies anymore -- she wants to experience the real thing!