Episode 1
Abby Grant is a mother and housewife, married to David. The couple returns from holiday at the point where a virulent flu virus is beginning to sweep the world. Abby is worried about her 11-year-old son Peter, who is on a school adventure holiday.
As the crisis deepens, Samantha Willis, Junior Minister for Health, tries to keep public panic under control as essential services start to break down.
Episode 2
Abby and her new friends find a house to shelter in and set about gathering the essential supplies they need to stay alive. When they visit a local supermarket they are confronted with Dexter, the leader of an armed gang that has laid claim to the contents. Abby is shocked by how quickly people have resorted to violence.
As Dexter’s gang is leaving, Abby sees a face she thinks she recognises…Episode 3
Abby stumbles across a community that could hold the key to everyone’s future. The group is led by Samantha Willis – the last surviving member of the Government. She has set up a community that still boasts light, hot water, food and power, all drawn from sustainable sources. Abby and Samantha hit it off immediately and Abby is full of hope that Samantha might lead the remaining population to build a new and better society. Samantha sees that Abby could become a trusted ally, but Abby’s illusions are shattered when she sees the lengths Samantha will go to in order to maintain control of her fledgling community.Episode 4
Abby learns of a group of young boys living at a nearby mansion called Waterhouse. She is determined to see if Peter is there, and leaves her new friends in order to find her son. When she arrives at Waterhouse, she walks into the middle of a land dispute between Jimmy Garland, an ex-Army officer who has an ancestral claim to the mansion, and an aggressive group of teenage boys who have taken up residence there.
When Jimmy is injured in a skirmish, Abby nurses him and the two quickly become close. Despite her growing loyalty to Jimmy, Abby must find out if Peter is at the house. She must earn the boys’ trust and convince them that a truce with Jimmy would be beneficial for both sides.Episode 5
When a so-called spiritual leader called John turns up at the survivors’ home with his group of followers, some in the house are suspicious of his motives. Charming and eloquent, John is a preacher with a unique perspective on the new world, but the family’s opinion of him is split. Some find comfort in his message, while others are deeply distrusting of his motives.Episode 6
Abby and her friends find themselves on the run from Samantha and Dexter, who have formed a dangerous alliance that threatens everyone’s freedom.
Meanwhile, Sarah is confronted by a face from the past which leads her to betray her new friends.