David installs a smoke detector at Hooper's Store and gets the Grouches excited about fire drills, with Oscar blaring an air horn throughout the neighborhood. Big Bird must choose between seeing a sold-out movie and keeping his promise to meet Snuffy, so he leaves a note at his nest. When they return, Big Bird discovers Snuffy left his own note claiming he went to the movies too, leaving David skeptical of such an unlikely coincidence. Sponsors: P, R, 2