Anne finds a key among her Aunt Edie's holiday decorations as she is busy preparing for Christmas and soon discovers that it unlocks a cubby in the church's Advent cabinet, which contains a beautiful sapphire ring. She wonders if the ring may belong to her recently deceased great-aunt and if so, why it is not among her other jewelry? Meanwhile, the production of the Christmas play is in jeopardy when costumes go missing and the director becomes ill....