The season focuses on the "Charmed Ones," a powerful trio of siblings who are determined to bring about the apocalypse. The siblings, Amenadiel (D.B. Woodside), Linda (Rachael Harris), and Dan (Kevin Alejandro), are revealed to be the Charmed Ones, who have been hiding in plain sight. As the season progresses, Lucifer and Chloe must work together to stop the Charmed Ones and prevent the apocalypse.