Charmed

After the tragic death of Mel and Maggie's mother, the sisters are shocked to discover they have an older sister; the three sisters begin to exhibit strange new abilities.

The sisters are warned to not trust Harry, so they concoct a plan to see if he is telling the truth; Harry soon realizes that the sisters are up to no good and tries to help before it's too late; the sisters struggle with their new roles.

When Macy learns of a mysterious death in her lab, she informs her sisters, and together they devise a plan to flush out the demon; Maggie volunteers to throw a Halloween party at her house.

While waiting for The Elders to arrive, the sisters' patience grows thin as they keep a watchful eye on their new charge; Charity arrives and gives specific instructions on how to handle the situation; Mel does not agree with the solution.

Mel is worried about Niko's safety, so Mel and Harry come up with a plan to protect her; Maggie notices that Macy is upset about her situation with Galvin, so she offers to help; Maggie's sorority sister Lucy turns to her for some help.

Maggie tries to make amends with Lucy and realizes that there is a new Kappa member she doesn't know; concerned about Galvin, Macy invites herself to his birthday party to investigate; Macy receives a cryptic message about her past.