Plot

Sam and Dean seek help from Bobby Singer, an old family friend in their mission to save their father from Meg. The brothers set a trap for Meg.

On a mission to save their father from Meg, Sam and Dean seek help from an old family friend, Bobby. When Meg shows up on Bobby's doorstep, the brothers lure her into a trap and exorcise the demon from her body after learning where John is being held prisoner. While trying to rescue John, the demon shows up and a full battle ensues between the Winchesters and the demon they have been searching for all their lives.—Anonymous

While visiting their father's friend Bobby Singer to learn more about demons, Dean and Sam are visited by Meg, who wants the ancient colt. They trap her completely powerless in the protective circles of the Key of Salomon and Dean interrogates her while Sam exorcises the demon that had possessed Meg's body. Before dying, Meg tells them where John Winchester is. Dean and Sam have to use their abilities to rescue John.—Claudio Carvalho, Rio de Janeiro, Brazil

Dean is desperate to contact his father, but as he makes another call, Meg answers John's phone. Meg taunts Dean that John is beyond help. Sam responds by saying that they should find the Demon and kill it with the Colt, but Dean counters that they need a plan because John isn't dead.

The boys arrive at the home of another hunter, Bobby Singer, and their shared history is quickly sketched out - Dean seems to know him quite well, and Bobby once ran John off with a shotgun. Sam goes through some of Bobby's books on demon lore, including the Key of Solomon, while Bobby and Dean talk. Suddenly Meg kicks in the door, attacks the boys, and demands the Colt. However, she soon gets caught under a devil's trap that is painted on the ceiling. Sam starts exorcising the demon. Dean interrogates her, demanding she tell them where their father is. Meg says she killed John, and that he died screaming. Sam reluctantly reads the ritual while Dean questions Meg about John; she repeatedly claims that John is dead, and Dean repeatedly refuses to believe it. Eventually, Meg says he is not dead, and tells them about a building in Jefferson City. Bobby explains that Meg is actually a girl possessed by a demon, and that the injuries she previously sustained in Chicago (in 1.16 Shadow) will kill her if the demon leaves her body. Dean insists on exorcising the demon to save the girl, no matter how broken she is. Sam reluctantly reads the ritual. Finally, the demon is banished, and human Meg, dying painfully, thanks them and offers the clue "sunrise." The boys leave Bobby to head to Jefferson City.

On their way to rescue John, Sam reiterates the need to kill the Demon while Dean argues the importance of family. Dean says Sam is like John: eager to die if it means killing the Demon. Sam demonproofs the car so they can hide the Colt in it, to make sure the demons don't get it. They arrive at the building where John is being kept (Sunrise Apartments, which they figure out from Meg's clue), form a plan to evacuate it that involves dressing up as firemen, and execute it. They are able to get the firemen outfits by Dean distracting the real firemen when they show up by claiming he wants to go back in the hotel to get his Yorkie, while Sam goes around the back of the firetruck, breaks in, and gets the suits. They get to the room which they figured out has demons inside. They trap the possessed humans guarding John in a closet and surround the door with salt. They find John almost dead in the bedroom. Sam insists on testing John with holy water. John is barely coherent, but he manages to ask about the Colt. Once all three are out of the building, they're set upon by Tom, who beats Sam severely. Dean whips out the concealed Colt (which apparently hadn't been in the truck) and shoots him through the head, saving Sam.

In a secluded cabin, as the boys salt the doors and windows, Dean confesses that he's scared of the lengths he'll go to in order to protect his family. John enters, claiming that Dean should be proud of what he does for the family. Dean grows suspicious of the kind words and points the Colt at John. Sam allies himself with Dean, and John is revealed to be possessed by the Demon as his eyes glow yellow. The Demon injures both boys and mocks Sam's unreliable special powers, and he also mentions that Sam was about to propose to Jessica. Dean draws the Demon's attention away from Sam, and it reveals that the demons in Meg and Tom were his children. The Demon explains that he killed their mom and Jessica because they got in the way of the plans he had for Sam, and kids like Sam. He uses a psychic power to attack Dean, causing him to bleed internally. Dean begs for his life, and John manages to surface long enough for Sam to free himself and grab the Colt. Sam uses the penultimate bullet in the Colt to shoot John in the leg, forcing the Demon to leave John's body. John begs Sam to shoot him, because he believes the demon is still inside him. Dean tells Sam not to. Sam lowers the gun just as the demon escapes John's body.

Sam drives the Impala with John in the passenger seat and Dean, gravely hurt, in the back. John expresses disappointment that Sam didn't shoot and end the family's quest, but Sam says that killing the Demon is not the most important thing. Sam promises to get them to the hospital, but a huge truck slams into the Impala, smashing it and rendering all three Winchesters unconscious. The truck driver has the black eyes of the possessed.