The second Christmas after their mother has died, Josefina and her three sisters find that participating in the traditions of Las Posadas helps keep memories of Mamá alive.

Christmas in Williamsburg means a dancing party at the Governor's Palace for Felicity, but her mother becomes very ill and cannot finish the special blue gown.

When her friend Nellie is suspected of stealing Mrs. Van Sicklen's black pearls at Christmastime, Samantha helps her discover where they really went.

When a dashing man from Mexico City brings Tia Dolores a ruby ring for Christmas, Josefina notices that things start going wrong and she decides to get to the bottom of the mystery.