The Angel of Death returns to visit the Charmed Ones but they're shocked to learn that he's there for Leo. To try to stop him from taking Leo, Piper casts a spell that backfires, making every man a Leo lookalike, forcing Piper to take drastic measures and ask the Elders and the Avatars for help. Meanwhile, Billie continues her search for the truth behind her sister's disappearance.

Forced to hide from Billie and Christy, the Charmed Ones find themselves stuck in the Underworld. Meanwhile, Leo appears to Piper and offers demonic approval; Coop searches for Phoebe; Billie & Christy resort to summoning the Hollow to stop the Charmed Ones and the Charmed Ones do the same.

Piper & Leo, with help from Coop's ring, must travel back in time to change the events that lead to the deaths of Piper's sisters. Meanwhile, Billie uses her power of Projection to do the same thing; many familiar faces gather to help Piper in her time of need.