A young woman, recently released from a mental hospital, is coping with ongoing episodes of schizophrenia.

Bored and unhappy as the Lord of Hell, Lucifer Morningstar abandoned his throne and retired to Los Angeles, where he has teamed up with LAPD detective Chloe Decker to take down criminals. But the longer he's away from the underworld, the greater the threat that the worst of humanity could escape.

After a drug deal gone wrong, a bruised detective must fight his way through a criminal underworld to rescue a politician’s estranged son, while unraveling a deep web of corruption and conspiracy that ensnares his entire city.