La Muerta is the story of Maria Diaz, a US soldier returning from a tour of duty in Afghanistan to be reunited with her family on Dia de los Muertos, the day of the dead. But her brother has fallen in with The Zavalas, a death-worshipping crime cartel led by the nefarious Mama Z. When they see the family celebrating, they believe they’ve been ripped off by them. The entire family is murdered in cold blood.
Maria wakes out of a coma Eight months later to find her family dead and gone. She seeks justice from the police, but she finds none: they are all in league with the crime cult. Daring the impossible, Maria - aided by the mysterious Faustino - decides to avenge her family and send the Zavala’s to hell, even at the cost of her own humanity.