Nita Iglesias’ mother is one of several women from their small New Mexican village who have mysteriously vanished by the Uranium mines feeding the nearby government lab. She’s desperate for one more reunion as the approach of Dia de los Muertos draws the dead back home—but her brother Isidro, a miner himself, has a darker way of marking the holiday.

As Isidro’s own radioactive seance in the village’s abandoned church pulls a second set of siblings—Karin and Julius Weiss, children of a lab scientist who recently died from his toxic research—into their orbit, the two families' fates fatally intertwine in a ghost story where all the dead have half-lives: but the living are the ones to fear.