Daughter walks into the bathroom, a room that is usually locked when occupied but that lock is broken. When she gets inside, to her horror, her father is laying in the bath, is eyes closed. She finds herself staring at his large cock, dreaming of what it would feel like to touch, to suck, to be inside of her. She finds herself moving closer to it, reaching out for it, touching it before her father opens his eyes and stops her. He immediately gets out, not bothering to dry or cover himself up, and bends her over the toilet, spanking her again and again, before sending her on her way.
From here I see her asking him to touch it on several occasions, each time her father turns her down. So instead she starts asking other men (teachers, neighbours, fellow students, random men at the supermarket) and each time she succeeds she comes home and tells her father about it, hoping that it will change his mind.
Additional Info: Whether he does change his mind is up to discussion, but I think eventually he would, and an incest affair would start. The house would be occupied by the daughter, and her happily married parents. I would play all male roles in this story.