Secrets Below tells the story of Lukan, a teenage boy filled with self-pity over a disability that he feels makes him a liability to his town. The second in the Secrets Series, this story takes place parallel to Lia's story in Secrets Above. Like Lia, Lukan must endure oppression in this post-virus world. The threat is much more violent, though. When Lukan meets a strange Wanderer, everything in his world changes.