Awed and oppressed by the vast prairie, Susie's mother hasn't set foot outside the sod house in months. On a trip into town to file a claim for additional property, Susie scours the Mercantile for a treat to cheer Mama. But it will take the contagious optimism and confidence of a migrating Icelandic family to jolt Mama from her brooding and cajole her to embrace the prairie with her daughter's fresh enthusiasm.