In 1863, a young black woman, who embroiders intricate maps on repurposed cloth to help enslaved men flee and join the Union Army, crosses paths with a Jewish seamstress who helps her discover that even the most delicate threads have the capacity to save us.

Now that she has found her brother Montez, Magdalys and her squad have embarked on a secret mission for General Grant, taking them deep into the Louisiana swamplands, to New Orleans, and eventually to the Mexican border where Imperial troops are forming an alliance with the Confederates in pursuit of spreading slavery--and once more Magdalys will have to use her telepathic link to the dinosaurs to save herself, her squad, and the union she believes...