Grandmother reveals her own agenda, Marcus seeks revenge, and Mother sets out to neutralize the serpent – but is leveled by the fallout.

A reeling Marcus and Paul join forces with Mother to disarm the newly weaponized serpent before it wreaks unimaginable havoc.

While Mother is distracted by the imminent birth of Tempest's baby, Sue and Paul make plans to free Marcus and plant the tree – but are met with a horrifying discovery

Sue resorts to prayer in her desperation to cure Paul, Father's project takes on new life, and hope is briefly renewed for Marcus and his followers.

After the Trust uses the children to strike back against Marcus, Mother takes matters into her own hands, and Father has a breakthrough.

Upon learning that the serpent is nonviolent, Mother fiercely protects it, while Father busies himself with the regeneration of a new android. Endowed with mysterious new powers, Marcus grows his congregation.

While the collective is tasked with hunting down the serpent, Mother is left to reconcile complicated emotions. Convinced that it will aid his cause, Marcus sets out to find the creature before the atheists do.

While Mother, Father, and the children face hostility from their new atheist collective, Marcus sets out to fill the walls of an ancient church with Sol's worshippers.