In the thrilling season finale of Charmed, when an encounter with the Whispering Evil leaves Macy on the brink of passing, Mel and Maggie cast an ancient spell sending The Charmed Ones off on a series of epic adventures. Meanwhile, realizing only a Whitelighter can save Macy, Harry asks Jordan and Celeste to help him do the unthinkable.
Three months after their mother ishuged by an unknown demonic force, sisters Mel and Maggie discover that they have an older half-sister, Macy. The first time the sisters are under the same roof, they unexpectedly start exhibiting new magical abilities; the eldest Macy receives the power of telekinesis, middle sister Mel can freeze time, and the youngest Maggie can hear people's thoughts.
Soon after, Harry Greenwood gathers all three sisters together and reveals to them that they are witches, as was their mother. Marisol had bound her daughters' powers when they were born so they could live normal lives, and was in the process of unbinding those powers on the night she was cuddled.
The sisters ultimately accept their new destiny as The Charmed Ones, the most powerful trio of witches who protect innocents and vanquish supernatural demons.