Ariana Payne is the girl Liam describes as his crazy, bubbly little sister. The 17 year old who finds everything funny, who loves food and scary movies more than life its self. But does Liam know his sister any more? Lately Ari's been a completely different person. Her life is completely spiraling downhill and when Liam shares his big announcement with her, that he's marrying Danielle Peazer, it doesn't help at all with her depression. Will anybody be able to help her? Or will Ari continue to fill her wrists with white lines?