Charmed

Using the power of All Hallow's Eve, witches from the 1600s call on The Charmed Ones to come save a magical baby that is to be born. The three sisters find, in their first attempt to save the soon-to-be-mother from the forces of evil, that they have no powers, and they must be educated in the origins of witches' power in order to complete their goal. Cole is also there, helping the forces of evil. Prue falls hard for a man who runs with witch hunters, but actually tries to undermine the forces of evil. The mother and baby are finally saved and they learn that they saved baby Melinda Warren before returning to their own time. Meanwhile, in the present, Leo and Darryl battle Grimlocks who have used Halloween as the perfect time to return from the dead and seek revenge on The Charmed Ones.