Diana has been away for quite a long time, and now that she's finally back, something's different about her. Rebecca, her sister, feels like she's not getting the whole truth of what's bothering Diana, and decides to start an "investigation" into the girl's life. Soon, she discovers that her sis is in a lot of trouble, but, before she can do something to help her, Diana takes her own life. Rebecca is more than confident that there was more to her sibling's death than just a "regular" suicide and digs deeper, trying to understand the motives, and, by doing so, she puts her life in great danger. Will she be able to figure it all out before death comes knocking on her door?