Luz "Little Light" Lopez, a tea leaf reader and laundress, is left to fend for herself after her older brother, Diego, a snake charmer and factory worker, is run out of town by a violent white mob. As Luz navigates 1930's Denver on her own, she begins to have visions that transport her to her Indigenous homeland in the nearby Lost Territory. Luz recollects her ancestors' origins, how her family flourished and how they were threatened. She bears witness to the sinister forces that have devastated her people and their homelands for generations. In the end, it is up to Luz to save her family stories from disappearing into oblivion.