Agent Brody and Paige investigate when they discover that the demon Sarpedon is capturing innocents' guardian angels and using them to protect himself from the new power. Meanwhile, Piper and Phoebe encourage Leo to go on a vision quest to face his demons.

When Daryll's friend is possessed by the spirit of an innocent killed in a fire in 1899, Phoebe and Drake transport themselves back in time to the caberet where it happened. However things go from bad to worse, when they find they cannot travel back to their own time. Meanwhile, Piper convinces Leo they need to take a family vacation.

When the sisters try to divert Zankou's attention from the Nexus, he hatches a plan to absorb all their powers. But when the girls realize what Zankou is up to, they are forced with a life-altering decision: sacrifice their powers or their lives.

Billie jeopardizes the Charmed Ones' new lives when Agent Murphy spots her using her powers to save an innocent. Meanwhile, Phoebe's overnight trip with Dex comes to a surprising conclusion when Billie casts a spell to make her happy, a spell with unexpected consequences.

When her parents come for a visit, Billie accidently transforms them into assassins and also manages to contact a demon who is posing as a human. Meanwhile, Piper attempts to continue her life without Leo; Paige tries to make a connection with Henry; Phoebe tries to find a way to have her own life.

After Paige and Henry leave for their honeymoon, Cupid "Coop" takes Phoebe on a journey through her past romances in an attempt to revive her excitement for love. Meanwhile, a group of magical teens, who are protégés of Leo, come to the manor seeking refuge from demons that have overtaken the Magic School, forcing Piper to take charge. Billie and Christy's parents come to town for a visit, but Christy refuses to see them in order to test Billie.