Panic and looting break out as a contagious illness ravages Moscow; a band of families and neighbors forms a shaky alliance for survival.
The group's escape is thwarted by a costly mistake; karma comes into play after a betrayal; a final destination is chosen.
Sparks fly between Polina and Misha; a brutal attack puts a life at risk; taking shelter in a storm, the group members make a horrifying discovery next door.
Strangers impact the course of the journey; romance blooms in unexpected places; a mob causes chaos and a tragic mistake.
Discovering someone missing, the caravan doubles back and comes upon a good Samaritan and some frightening children; the disease strikes the group.
An infection causes dismay and division, and a line is crossed by Ira and Sergey; flashbacks reveal past pains.
After Boris prays, a blessing arrives, along with more heartbreak; Ira and Sergey struggle with their secret; safe havens turn out to be dangerous.
Marriage vows mark a new beginning; Ira exposes damning secrets from Anna's diary; Pavel grapples with hard choices; a happy reunion turns out to be short-lived.