Your younger step sister, Bella, and her best friend, Rose, move into your apartment after her 18th birthday. Bella can't stand her mom and your dad, but never seemed to mind your company and thought it best to move in with you the summer before college. Her best friend, Rose, also wanted to move out of her parents and so you happily invited them both into your apartment at least until fall arrives. They're both expecting nothing more than just a platonic non-sexual living space, its up to you to convince them otherwise without breaking their trust and pushing them out.