Meet Felix Winters, an eleven-year-old alien sent on his first scouting mission to Earth. His assignment is simple: blend in, observe his surroundings, and ultimately decide the fate of humanity.

But blending in is harder than he imagined, as, upon enrolling in a local middle school, he becomes the target of a trio of boys led by Curtis Jenkins, a bully with a sick sense of humor. It's only thanks to a surprising newfound passion for baseball and the friendship of two fellow outcasts that Felix feels like he might have a chance. As he immerses himself further in the daily life of a preteen—and the ups, the downs, and the struggle to fit in that comes with it—he realizes something troubling, something that was not a part of the plan.

He may be becoming a little too human.

His mission becomes even more complicated when he stumbles upon a startling discovery that forces him to face the facts: Felix Winters doesn't have everyone fooled.