When an officer with the Department of Homeland Security is murdered in broad daylight, LAPD detective Mark Meachum is recruited to a secret task force, alongside undercover agents from all branches of law enforcement, to investigate. But the hunt for the killer soon uncovers a plot far more sinister than anyone could have imagined, kicking off a race against time to save a city of millions.

An epic saga which takes place over a long time span from 1961 to 1991. From the midpoint of the story we view the friendship of four boys. In season main heroes are in their 20's, they are childhood friends, and for the sake of their friendship they are ready to sacrifice anything. Everyone has their own dreams, but their circumstances will take them on a difficult path and they will be forced into all kinds of underground economic dealings in the early 60s. And, worst of all - they are successful in this business. And the more successful they are, the further they get from their real dreams.