Kit is delighted when Aunt Millie comes to visit! Aunt Millie has a special way of turning ugly things into beautiful useful ones, and she has ideas for helping the whole Kittredge family. But what will Kit and her friends think of Aunt Millie's penny-pincher birthday party? Then, a train-hopping adventure makes Kit appreciate the safety of home, and learning about homeless children inspires Kit to make a difference. But what can she do to bring the children hope and help?