After pondering a marriage proposal from Cole, Phoebe is forced to face a blast from his demonic past when the widow of one of his past victims hunts him down, looking for vengeance. As a result, they're forced to face an old protégé of Belthazor's who likes to kill witches with the same athame Cole used to use. However, when Paige learns of this, she has an instant mistrust of Cole and tries to convince her sisters to vanquish him. Meanwhile, Paige helps Leo and Piper find out whether they're ready to have kids.

Still feeling guilty about her adoptive parents' death, Paige gets some help from Leo and the ghosts to go back to the day of their car accident so can work through her feelings and discovers how she was able to live through the accident. Meanwhile, Phoebe and Cole get possessed by a pair of ghosts who look to finish a job from 50 years ago, and as a result, Piper has to find a way to keep the ghosts in succeeding in their mission.