The Thirteen Origins is a series of one-shot origin stories for the members of The Thirteen, a group of Mexicans and Mexican Americans who discover they are chispas, able to wield impossible powers. Óscar Ramírez shares his birthday with his abuelo Ishmael, and on his eighteenth, Óscar does a traditional hikuri dance to honor his abuelo and the ancestral connections he has. He's shocked when his abuelo takes him aside and tells him he's a chispa, a tausiya, a shaman for the gods who can manipulate people's perceptions of reality and give them visions. At the same time, oil is discovered in a nearby park. The municipality decides to close and sell it to businessmen, leaving the entire community with nowhere to gather. To save his beloved community park from destruction, Óscar needs to figure out how best to use his unique spark.