The Worm Turns (S04E01)

In the aftermath of humanity’s devastating nuclear conflict, Night Eternal has taken hold. Tormented by the horrors his son has unleashed, Eph leaves New York City behind for Philadelphia. However, his isolation is interrupted when he meets a group of new allies who reignite his determination to resist. Meanwhile, under Setrakian's guidance, Fet and Quinlan embark on a quest to discover a fresh way to defeat the Master.