"Can Olive stay positive when a social-climbing bully moves to town? In her fourth adventure, sixth grader Olive Branche is on top of the world until new girl Natasha begins to encroach on her friendships, slowly and methodically freezing her out of her many different social circles. Relentlessly optimistic Olive tries to stay genial despite Nat's overt jibes, but when Nat takes it to a new level and ruins Olive's carefully planned Halloween party,...