Having reached the mature age of eleven in the tiny California town of Hard Pan (population 43), Lucky discovers that there is still much to learn about friendship, parental trust, and the Milky Way galaxy.
Determined to be a good big sister, Rex starts spending all her time with the baby her family has adopted, making her neighbor Pinky fear that he has lost her friendship.
Since his much-publicized adoption at age three by American movie stars, thirteen-year-old Josef's carefully scripted public life has hidden the isolation he feels at home, but writing a book with a ghostwriter reveals much about his adoptive family and the one he lost during the war in Croatia.
While at St. John National Park in the Virgin Islands for a seminar on coral reefs, the Landons help a wealthy thirteen-year-old to find his birth mother, who he believes is in danger.
Caitlin finds out that bringing her adopted Korean brother's eleven-year-old sister into their home requires patience and understanding, but gradually they become a real family.