I Believe the Children Are Our Future

I Believe The Children Are Our Future is the 6th episode of Season 5. 

Synopsis
Sam and Dean investigate a series of murders that echo fairy tales and urban legends. Their probe leads them to an 11-year-old boy named Jesse who's able to make everything he believes come true. Castiel thinks he is a threat and wants him eliminated.

Plot
In Alliance, Nebraska, people are being killed by practical joke devices such as itching powder and joybuzzers. On top of that, a very odd looking Tooth Fairy extracts a man's teeth. It turns out that an eleven-year-old boy named Jesse is the reason for all of this. Everything he believes becomes reality. After searching his birth records, Sam and Dean find out that the boy was adopted, so they visit his biological mother, who lives across the state. She tells the brothers that she got pregnant from a demon possessing her and gave up her child for adoption after giving birth to him. Castiel informs the Winchesters that Jesse is an Antichrist, a being half human, half demon, imbued with essentially unlimited powers. Therefore, an Antichrist could be Lucifer's special weapon in the war against Heaven and, as a serious threat, needs to be eliminated. However, Sam and Dean believe that Jesse won't turn evil if he's taken somewhere safe.

When they try to convince Jesse to come with them, the demon which conceived him interferes and pins them to the wall. It is again possessing Jesse's biological mother. After listening to the demon, Jesse renders it unable to speak in order to hear what Sam has to say. Sam tells Jesse that he has a choice and that it will haunt him forever if he makes the wrong decision. After that, Jesse exorcises the demon from his mother. Pretending he wants to say goodbye to his adoptive parents, he goes upstairs and vanishes into thin air, protected by his powers, which make it impossible to track him down.

Major Characters

 * Sam Winchester
 * Dean Winchester
 * Castiel
 * Jesse Turner

Minor Characters

 * Julia Wright
 * Julia Wright's demon

Featured Supernatural Beings

 * Jesse Turner
 * Angel
 * Demon