In 1928, nine-year-old Teresa leaves everything she knows in San Antonio -- including her beloved cat Diamante -- and boards a train bound for Michigan, where her parents have found work in the vast sugar beet fields of Saginaw. The long train north is a source of fascination, but stepping into Michigan feels like entering a different world -- the cold wind, the strange houses, and the long days helping on the farm instead of going to school. Teresa cares for her little sisters while her parents tend to the sugar beets. She learns to navigate a life shaped by hard work, migration, and constant change. After the harvest, a new season begins, and the whole family must pack up and make the long trip back to Texas, to plant new roots. Based on the stories the author's grandparents told her about their lives as Texas migrants in Michigan's Thumb, My Sugar Beet Summer pulls the reader into Teresa and her family's life in a new land, on a sugar beet farm on the eve of the Great Depression.