Em was abducted by one of Blaine's young recruits and taken to a church. Blaine declared himself the 'mother of Babylon' and claimed Em was the reason the gates of hell had opened. As the chosen one, Blaine believed it was his responsibility to send her back, linking the abduction to his apocalyptic beliefs and mission.

In 'Mother of Babylon,' Wayne Cypress's big secret is revealed to Dana in a tense and unsettling manner. The episode focuses on the unfolding of this secret, which significantly impacts their relationship and the storyline, though the exact nature of the secret is not detailed in the summaries.

Blaine piqued Ibrahim's curiosity by suggesting that their search for answers might not be limited to scientific explanations but could be rooted in religion. This led Ibrahim to read the Holy Quran, despite his discomfort with the direction of his research, as Blaine convinced him that the answers might lie beyond science.

Em Cypress is held inside a Riverside cell where she receives important visitors. The episode portrays her facing her past and fighting for her life, highlighting her critical and vulnerable position in the story.

Dana and Wayne race to free the Revivers, indicating a rescue mission or effort to protect those who have been revived. This action is central to the episode's plot, emphasizing their roles in confronting the chaos caused by the revival phenomenon.