My father remarried and I got a young and beautiful stepmother. And she's a super cute high school sister! Then my father started to touch my step-sisters in a way that was almost sexual harassment! Meanwhile, I masturbate every night, peeking at my father and step-mother having sex! One night, I was surprised to see my step-sisters peeking in, and my father noticed and said, "There are families like this too," and started having sex with my step-sisters! My step-mother took me by the hand and said, "You've been watching us every night, haven't you?"...and a forbidden domestic orgy began.