Someone shoots a firework at a rock-star diva and hits her backup. Lucifer offers to help protect the diva to take the spotlight off of Chloe… and keep God from trying to kill her. Meanwhile, Dan tries to console Marcus while Charlotte counsels Maze and Linda.
Lucifer comes up with a way to undo the mark placed on Marcus, but things don’t go quite as planned. Meanwhile, Chloe and Dan try to solve the attempted murder of the assistant to a Hollywood producer, Maze goes head-to-head with Amenadiel, and Charlotte goes into therapy with Linda.
When a best-selling novelist is murdered, Lucifer and Chloe discover that her books are based on real people from her past, and must infiltrate her high school reunion in order to catch her killer. Meanwhile, Amenadiel and Linda struggle with making their relationship public.
Ella’s older brother Jay is the primary suspect in the murder of a diamond dealer, and she sets out to prove his innocence. Meanwhile, Marcus tracks down Amenadiel and wants revenge for Amenadiel putting the Mark on him and condemning Marcus to immortality.
Lucifer and Marcus strike a deal to find a way to kill Marcus, and Lucifer wants to learn Marcus’ mental and physical vulnerabilities. When the opportunity arises for Lucifer to pose as Marcus’ husband, Lucifer leaps at the chance. Meanwhile, Maze smells something different on Charlotte.
Lucifer tries to figure out if Marcus is telling the truth about his involvement in Lucifer regaining his wings. Meanwhile, Chloe has had enough of Lucifer’s selfishness and sets out to solve a case without him.