There's less than a week until the first play of the season, and everything is going wrong. A prompt book is missing, lights suddenly flash on and off, and the lead actor doesn't show up to rehearsal. Everyone at the theater is frantic -- except ten-year-old Rosie. She's just trying to stay out of the director's way. Then she meets a strange fellow named Will. Why can't anyone else see him? And why is it that every time Rosie sees him, she ends up in trouble? Who is he? Could he really be the famous playwright?