Third-grader Gavin and his friends aren't sure what to make of the new boy in their class, Khufu. He sure doesn't look or act like the other kids . . . and they suspect that he stole Gavin's bike! Meanwhile, Gavin's great-aunt Myrtle is coming to stay with his family again, and Gavin is sure she'll be teaming up with his big sister to boss him around the whole time.