Witches can't run away from their legacy, at least not the Halliwell sisters -- Prue (Shannen Doherty), Piper (Holly Marie Combs) and Phoebe (Alyssa Milano).
While Phoebe feels Cole trying to contact her, the Angel of Destiny comes to the Halliwell manor and proposes to remove the powers of the sisters as a reward for vanquishing The Source.
S4E21 44 min