With a code to guide them, Dwight and Sherry become ethical outlaws known as the Dark Horses. When Strand recruits them for a search and rescue mission, it forces them to question their code and their future.

When baby Mo goes missing inside the Tower, Dorie Sr. finds himself in a unique position to prove his worth to an increasingly paranoid Strand.

Strand fights to maintain the peace of his new life after the sudden arrival of an old friend threatens it with ghosts of the past.

Dwight and Sherry confront the demons of their past to secure a better future for themselves.