While getting ready for a Halloween party at the club, the sisters soon are sucked through a vortex to 1670 in order to protect their ancestor Charlotte Warren, her unborn child and a coven from an evil witch. Meanwhile, the Grimlocks return and seek revenge on the sisters when they get sent back in time. As a result, Darryl and Leo are stuck battling them while trying to discover what they are in order to vanquish them.

When Cole casts a spell on Prue to make her think that a man is suffering because he can feel the pain of others, she decides to cast a spell of her own to remove the man's empathic powers, only to unwitting release a demon from a curse and causes the demon to harm innocents again. As the demon decides to hunt the person who cursed him, Prue soon discovers that in removing the empathic power from the demon caused her to gain it instead. While Phoebe starts to fall head over heels for Cole, Piper fears that her relationship with Leo doesn't fall into the realm of being normal.