Prue and Phoebe are in the kitchen when Piper comes in carrying groceries and complaining that she stepped in dog droppings. Some guy has apparently been allowing his dog to do it's business all over the neighborhood, and suddenly the girls hear a dog bark. They run to the window and see him allowing his dog to do his business at the front of their driveway. Phoebe suggests that they should use their magic to teach him his lesson; Piper freezes him and Prue flicks the dog droppings onto his shoe. They momentarily joke about whether or not the man saw them before parting, Prue and Piper to the kitchen to make coffee and Phoebe to watch TV. When Phoebe pauses on the news channel giving a headline about baseball player Cal Green she has a premonition of her future self being burnt alive while Prue and Piper watch. She screams and Piper and Prue come running to help.
Piper and Prue are trying to calm Phoebe down while figuring out what triggered the premonition when the doorbell rings. Piper answers it. It's Leo, he has the day off since the Elders are making him work that evening and he wants to spend it with her. She declines because of Phoebe's situation, and he suddenly gets a call from the Elders and kisses her as he orbs out. In the attic Leo is flipping the pages of the Book of Shadows by himself and he orbs out just before the girls enter. The book is open to a spell to go forward in time and they determine that is what they must do to save Phoebe. They do the ritual and disappear. Piper wakes up in the manor in her future body and a girl is entering the room calling her "Mommy." This confuses Piper, but she has little time to think as the girl hears a horn honk and runs to get her backpack for school. The girl calls to Piper, and at the door another mom is picking up Piper's daughter and she verifies that she should take the girl to Piper's ex-husband's house after school. Piper decides that is the best course of action and just as the girl is ready to leave she whispers a promise to her mother that she will never use her powers again. A limo pulls up as soon as the girl disappears and a blonde Prue steps out of it followed by an entourage. Prue now owns Bucklands and is excited to hear about how Piper's future self has turned out. They discuss why they are in their future bodies and not just observing them, like when they traveled to the past. Apparently traveling to the future is different than going to the past. They realize this means Phoebe's life really is in jeopardy. On the TV a man named Nathaniel Pratt vows that he will hunt down and rid the world of witches.
Piper and Prue enter the attic and are surprised that the book is no longer on its pedestal. Prue begins gesturing emphatically and suddenly an entire side of the attic is nearly destroyed; obviously, her power has grown. Piper sees that the pedestal has overturned and at the bottom is a key to Prue's safe at Bucklands. They decide that their next course of action should be to head to Bucklands. In a prison cell with a glass front, similar to Hannibal Lecter's in Silence of the Lambs, Phoebe is calling out for someone to answer her questions; she touches the glass and is shocked. Prue and Piper are outside Bucklands heading towards it when Piper sees a man almost spill his coffee; out of habit she freezes him. The entire area is frozen, an example of how Piper's powers have expanded exponentially. Leo storms towards them absolutely infuriated that Piper has used her powers. He apparently doesn't know they are from the past, and says that they agreed not to use magic for Melinda's, their daughter, sake. A woman enters the scene and cries "witch" when she sees everything is frozen. Everything unfreezes and Leo ushers them away before the witch hunters find them. In prison, Nathaniel Pratt visits Phoebe. He reveals to her that she killed a man, and that he is on a mission to wipe out all witches.
In some sort of underground hideout for many people, Piper is trying to convince Leo that she and Prue are from the past. Leo begins to berate her when she interrupts him with a passionate kiss. This proves to him that Piper and Prue really don't know what's going on. Leo explains that everyone in the hideout has been accused of witchcraft, although most of them are not really witches. Pratt apparently does not suspect Piper or Prue of being witches. Leo tells them that Phoebe killed Cal Green, because he hurt someone close to her. She crossed the line from protecting the innocent to punishing the guilty. They want to go and explain to Phoebe, but Leo says he'll go for them so that they don't have to use their powers. Piper agrees and she and Prue plan to head for Bucklands. Piper and Prue walk out of the Bucklands elevator and people immediately bombard Prue to get her attention. Prue's assistant steps in and clears the crowd and helps Prue escape to her office, leaving Piper alone. Piper enters and it is revealed that even Prue's assistant doesn't know who Piper is. Prue discovers from her assistant that she never married, and that work has become her whole life. Moments later, they dismiss her assistant and pull the Book from the safe once they are certain they are alone. They search for the spell to return in time, but it's gone. Leo orbs into the prison cell with Phoebe and tells her that she must pay for her crime. Phoebe doesn't understand, but when Leo hands her a newspaper clipping. She receives a premonition of her killing Cal Greene with electricity shooting from her hands. Phoebe is devastated and Leo orbs out.
At the manor Prue is flipping through the Book and sees that several pages have the corners turned down. Apparently their future selves have devised a plan to save Phoebe, even though many of the spells cross the line into personal gain. Leo enters, and the girls are upset to find that he didn't bring Phoebe with him. He tells them that Phoebe has to die for the greater good. Piper is irritated by this and freezes him; while Leo is frozen Piper and Prue take the spells and leave. Outside Leo's house, Piper and Prue are sitting in the car debating whether Piper will bind her daughter's powers. Finally, Piper leaves the car and walks to the porch; Piper looks through the window and sees her daughter playing with a dollhouse. She glances down at the Binding Spell in her hands when Leo orbs in behind her. He tells her that binding Melinda's powers aren't necessary, and that he will take care of her. Piper questions their relationship, and Leo says that they couldn't make it work because of their powers but they were very happy for a while. Piper goes back to the car and Prue is upset because she has made her whole life about work, and vows to change. Outside of prison, Prue and Piper look at a big cement wall and glance down at their blue print of the prison. They decide to make a door with one of their spells here. The two enter the prison and Piper freezes a guard that tries to stop them. When they reach Phoebe's cell it is empty.
Phoebe is tied to a pole where she will be burnt at and Nathaniel is taunting her. Nathaniel turns to the people watching, mainly news media, and reminds them all that this is a lesson for witches and that he will destroy them all. He orders the execution, but Piper and Prue break in and freeze the room just before the fire starts. They try to break Phoebe out, but she refuses. She knows she has to pay for her crimes; the executions must stop with her. Prue and Piper try to use the logic that Cal Greene deserved what he got, but Phoebe explains that "wrong thing done for the right reason, still the wrong thing." Piper and Prue concede and step back, and unfreeze the room allowing Phoebe to burn. Back in the manor in present day Prue and Piper frantically search the manor to make sure that Phoebe didn't really die. They don't know exactly when they are, but Phoebe turns on the TV and sees the news report that triggered her premonition. They are back where they started. The three run to the window when they hear the dog bark and see that the man is allowing his dog to do his business in the same spot. Piper freezes him, and Prue prepares to do the same action as before when Phoebe stops her. The man outside is Nathaniel Pratt, and this may have been the moment when they began using their powers as punishment. Piper unfreezes him and they leave the window.
The girls discuss what they want to change about the future: no longer being vindictive, Prue doesn't want work to run her life, but Piper still wants to be with Leo and to have a daughter, but make the relationship work. The doorbell rings and its Leo. Piper greets him with a kiss, and Leo explains that he didn't know why the Elders had sent him up to the attic but only knew that they needed to learn a lesson. She promises that they did. Piper makes him promise to work on their relationship always and kisses him as the scene fades out.