After Paige crosses paths with a cursed pirate called Captain Black Jack Cutting, she happens to get cursed as well and begins to rapidly age. As a result, Piper and Phoebe have to find and steal a special golden chalice for Paige to use to drink from the fountain of youth in order to break the curse.

The sisters get assigned a new Whitelighter as a blue moon rises over San Francisco. When the moon causes the Charmed Ones magic to transform into something unusual, their Whitelighter get mauled, causing the Elders to cast suspicion upon Leo. However, they soon discover what the moon has done to their powers and go about fixing everything. Meanwhile, Leo has an interesting encounter with the Avatars.