A young woman joins a supernatural organization where biblical characters secretly help humanity. In his first mission, together with the messenger Aaron, he must reunite a son with his dying father.
McKenna helps Samuel convince a mother to give her adult son with Down Syndrome more independence, while meeting a caring 9-1-1 operator who gets friendship calls from the son.
When the Program sends Abraham's wife Sarah to help an infertile couple, McKenna and Sarah get unexpected guidance from Miriam as to the kind of help they're meant to offer.
When a talented singer-songwriter resorts to self-harm, McKenna sets Rahab up as a guidance counselor at the young woman's school to unearth the root of the problem.
McKenna aids Courier Jacob in helping a drug addled reporter who lands on the streets after selling out her sister for a fix. Meanwhile, McKenna's father fights his own substance abuse demons, trying to cope with the loss of his wife.
Despite begging the Program to help her dad, McKenna's shocked when they assign a special Courier to her. She must confront her role in her mother's death before she can move on.