Mary's older sister, Gwen, has screwed up everything. Not only is Gwen pregnant at seventeen, but she's also decided to marry the Creep who knocked her up. Now Mary is powerless to stop her family from imploding. Her parents are freaking out, and to top it off, the Creep has a gross fascination with Mary while Gwen enjoys teasing her to tears for sport. Despite her brother's advice to shut up, Mary can't keep her trap closed and manages to piss off Mom so much that it comes to blows. Mary doesn't know what to do, and all her attempts to get help are rejected. When she finally plans her escape, she fails to consider how it could destroy them all.