Ep 5. Other Women

The Charmed Ones encounter a trio of witches known as the Harman sisters who have their sights set on stealing the Book of Shadows. When the sisters first approach the Halliwell manor, they pretend to be three innocent women seeking help and guidance from the Charmed Ones. The sisters are able to gain the trust of Prue, Piper, and Phoebe, but soon reveal their true intentions and attack the sisters in an attempt to take the Book of Shadows for themselves.

As the sisters fight to protect the Book of Shadows, they begin to uncover the Harman sisters' dark past. The Harman sisters were once part of a coven with the sisters' mother, but after an altercation resulting in their mother's death, they were banished from the coven. Feeling betrayed and abandoned by the other witches, the sisters became bitter and turned to dark magic.

As the Charmed Ones continue to battle the Harman sisters, they realize that the sisters are not their true enemies. The Charmed Ones must work together with the Harman sisters to uncover the truth about their mother's death and to stop the real culprits behind her murder.

Meanwhile, the sisters' personal lives also begin to spiral as Prue struggles with accepting her powers and Piper deals with a difficult breakup. Phoebe also finds herself in a dangerous situation as she is stalked by a mysterious stranger who seems to know about her powers.

In the end, the Charmed Ones and the Harman sisters are able to put their differences aside and work together to defeat the true enemy. The sisters also begin to come to terms with their powers and their destiny as witches.