When baby Julius is born, his parents think he is just perfect. “Julius is the baby of the world,” they chime as they kiss him and admire him.

But Lilly is Julius’s older sister, and she knows differently. “I am the queen,” says Lilly. “And I hate Julius.”

Poor Julius. And poor Lilly, because her selfish behavior is making her miserable, too. Can anyone persuade Lilly that her brother really is the baby of the world?