A neighborhood group of children organize clubs and set off on adventures that include a train trip to New York, club publishing and drills, picnics, street-cleaning efforts, nature talks, small theatrical entertainments and a circus. Episodes follow travel mishaps, cooperative projects, and encounters that reveal unexpected talents among the youngsters. Through hands-on tasks, community-minded schemes and Miss Martin’s instructive stories, the children practice responsibility, learn practical skills, and deepen friendships, bringing their busy summer of play and service to a reflective close.