After an idyllic childhood of homeschooling with her mother and three older brothers, Maggie enrolls in public high school, where interacting with her peers is complicated by the melancholy ghost that has followed her throughout her entire life.

July Chen sees ghosts. But her dad insists ghosts aren't real. So she pretends they don't exist. Which is incredibly difficult now as it's Hungry Ghost month, when the Gates of the Underworld open and dangerous ghosts run amok in the living world. When July saves a boy ghost from being devoured by a Hungry Ghost, he becomes her first ever friend. Except William is not a ghost. He's a wandering soul wavering between life and death. As the new friends...

Ghost siblings and best friends Fitz and Cleo go to the beach, fly paper airplanes, play baseball, and adopt a cat.