Academy Award® winner Jessica Chastain stars in a terrifying trip into the darkening world of a young girl, Bela, who forms a relationship with a disturbing entity in her home who looks uncannily like her own mother. "Other Mommy" proves to be more than a mere figment of the girl's imagination as she becomes a sinister, manipulative presence determined to tear apart Bela's family.

Sezon 1・Muhammad Ali (znany wówczas jako Cassius Clay) zmaga się ze sławą, wątpliwościami i konfliktami rodzinnymi na drodze do pasa mistrza świata.