CUMcity is a Freeuse sex environment, where there are no moral standards. Dick and his family, his wife and twins, a boy and a girl have just moved there.
Her parents were divorced and living with her mom was stifling her. She wanted to live with her dad. She was just sixteen, though, so it looked like she would would have to endure two more long years before she could investigate things sexual. On a rare weekend visit with her father she asked him to take her on her first romantic date. In determining what "romantic" meant some investigation revealed she did not object to being naked with him. She didn't object to letting him breed her, either.
Megan and her uncle Rick go on their annual canoe trip. But when a spot of bad weather causes them to share a sleeping bag, it also leads to them sharing each other.