In a flashback episode that takes place when Lucifer first came to LA, Amenadiel comes to retrieve his fallen brother, but is shocked when he is mugged. Amenadiel enlists Lucifer's help to track down the mugger and Lucifer, in turn, offers his assistance - but only in exchange for a favor. Meanwhile, Chloe and Dan - who are still married - investigate the murder of an MMA fighter, Aidan Scott, at the hands of the same killer who mugged Amenadiel.
LUCIFER is the charming, charismatic and handsome-as-hell original fallen angel, who, bored and unhappy in Hell, takes refuge in Los Angeles, where he uses his gift of persuasion to punish bad guys. But the longer he's away from the underworld, the greater the threat that the worst of humanity could escape.