SPOILER ALERT!! - Abby (Julie Graham) stumbles across a community that could hold the key to everyone's future. The group is led by Samantha Willis (Nikki Amuka -Bird), 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 that Samantha will go in order to maintain control of her fledgling community.
Meanwhile, Greg (Patterson Joseph) and Tom (Max Beesley) are out searching for supplies when they encounter a family stranded on an isolated farm. The father has successfully sheltered his children from the virus by keeping them imprisoned in their own home. When the daughter of the family reaches out to Tom and Greg to set her free, they are faced with a terrible dilemma - any contact with them could kill the family. Episode three airs Saturday night, February 27th @ 9:00 p.m. EST on BBC America.