About

Supernatural is an American cult dramatic television series regarding the paranormal. The series, which is filmed in Vancouver, Canada, debuted on September 13, 2005 on the WB, and is now part of The CW's lineup. The second season premiered on September 28, 2006, the third season premiered on October 4, 2007, the fourth season premiered on September 18, 2008 and the fifth season premiered on September 10, 2009.

1x01 "Pilot" 
At a young age, Sam and Dean Winchester witnessed the unexplainable death of their mother, which in turn led.. their father to teach them skills which could be of use in the search for whatever it was that took her life. Years later, while attending Stanford University, Sam finds himself brought back into the paranormal world by his older brother, who has come to tell him their father has mysteriously disappeared. The two hit the road in Jericho, California, about 2 hours' drive from Stanford to find him and are soon sidelined in a small town where a ghostly Woman in White (Sarah Shahi) has been taking male victims.

2x01 "In My Time of Dying"
The series picks up where it left off, and the Winchesters are taken to a hospital in Memphis. Dean is in a coma and a grim reaper is trying to take his soul. Later Dean learns that by refusing to move on he might become a spirit just like the ones they fight. Sam tries without success to save his brother, but John makes a deal with The Yellow Eyed Demon to save his son's life in exchange for his own life and his much appreciated Colt. 

3x01 "The Magnificent Seven"
Bracing themselves for the possibility of an apocalyptic war, Sam and Dean realize they have an enormous task of hunting down the hundreds of demons that escaped from the Devil's Gate. With only a year left to live, Dean decides to live life to the fullest and exhibits a carefree attitude that troubles Sam, who is trying to find a loophole in the deal. Bobby tells the brothers about a sighting in Nebraska, that turns out to be seven demons that are the actual manifestations of the Seven Deadly Sins. Ruby appears for the first time and seems to be stalking Sam.

4x01 "Lazarus Rising"
Four months after the events of last season's finale, Dean, apparently alive, somehow manages to dig his way out of his grave and rob a small store where he is then attacked by an unknown enemy. Bobby introduces Sam to Pamela, a psychic who nearly succeeds in summoning Azazel (the yellow-eyed demon). Later, Bobby is attacked. Sam meets old friend Kristy for the first time. The two discuss Sam's hesitance to share news with Bobby. Meanwhile, Castiel faces tough questions from someone he claimed to rescue.

5x01 "Sympathy for the Devil"
Lucifer's prison has been opened by Sam's successful attempt to kill Lilith. As the gate to Hell fully opens, the Winchester brothers are rescued by an unknown force and teleported into a plane, watching in horror the start of the Apocalypse. In an encounter with the prophet Chuck it is revealed that Castiel was blown to pieces by an archangel. When they try to figure out what to do next, they are attacked by their old enemy Meg and a possessed Bobby. The brothers learn that there is a weapon strong enough to defeat the Devil — Michael's Sword. They set off to find it, but instead burst upon Zachariah, who reveals that Dean is in fact Michael's Sword, the human vessel of the Archangel Michael. However, he refuses to provide his mind and body for the angels' plans even when Zachariah threatens to kill Sam and Bobby. As Zachariah begins to torture Sam and Dean, Castiel, miraculously revived, appears and tells him to leave. Meanwhile, Lucifer is trying to convince his own vessel, a man whose family has been slaughtered by a killer, to let him take over his body so he can face God and seek justice. 

credits wikipedia