Evangeline Rose Brown, more commonly called Rose Is the school'd overachiever. Her life goes downhill when her sister, Arabella Christine Brown (more commonly called Christine) kills herself. Rose is convinced that she could've prevented Her sister's death and is filled with remorse. Wanting more than anything to find out why he sister did it, she teams up with a boy named Aaron who is more of a loser than her, and also one of her sister's best friends secretly. Using Christine's diary to find clues, Rose and Aaron go on a breathtaking journey to find the cause of Arabella's death. But what obstacles will they encounter along the way?