One night of passion, and everything changes...
Catherine begs Brad not to tell that she was at the party, and he agrees on the condition that she leave with him. He says it's to keep her safe, but when they're hidden from prying eyes, they cross the line that no steps should cross.
The next morning she bolts to find the morning after pill, but he's not giving her up. He wants to claim her, and she can't deny her emotions any longer, even if it means having her stepbrother's baby.