Kay, a young, curious girl, desires to know more about her late grandmother, Gammie Mae. A visit from her great-aunt Trish and Uncle Alan brings a special gift from Gammie Mae. To her surprise, it is a box of purple azalea seeds and handwritten letters filled with love and Christian faith. With her mother's help, they plant her azalea seeds in the backyard. Kay showers them daily with water, love, and a letter from her box until, one day, her faith begins to dwindle.