An 18 year old, her new step-brother, and a beach vacation

Jessica is about to start college and her mother has just married a man who has moved himself and his son across the country to live with them. Her new step-brother Josh, is her same age as her, handsome and well-muscled, and about to start school next month on a baseball scholarship. He has only been living with her for a month now and is still very shy around her and all of her friends. She is hoping she can really enjoy watching him squirm.

Jessica's mother and new step-father have just left for their honeymoon, and have paid for Jessica, Josh, and 3 of Jessica's friends to get away to a cabin near the beach for a week to enjoy their last summer before college. Jessica and Josh will be joined on the trip by Natasha, a busty young woman who wears her sexuality very openly pursuing men and clearly taking great pleasure in her conquests, Tina, a slim woman who has confided in Jessica that she has a bid of a sadistic streak, and Amy, a shy woman whose figure is still a mystery to even her friends, who ogles men any chance she can get, but struggles to speak to them.

They have just unpacked in their cabin, which consists of one large living and sleeping room, a small bathroom and a small kitchen. There is a couch and 2 queen sized beds, but discussing sleeping arrangements can wait. Jessica has decided it's time to head to the beach, after a quick drink of lemonade to start off her plan. She hasn't let any of her friends know about the pills yet. She wants them to think their effects are natural for the time being.