It is back to angels and demons business for the Winchester brothers in "Supernatural" Season 9, Episode 21 titled "King of the Damned." The CW Network has released the promo video and still photos for the upcoming episode teasing about the war between angels and demons beginning and Dean Winchester's (Jensen Ackles) getting a hold of the "First Blade."

The previous episode had Dean and his brother, Sam (Jared Padalecki), leave Chicago and forget about hunting the monster families that rule the city after Castiel told them that he found a line leading to their nemesis Metatron (Curtis Armstrong). In the promo video, Sam Winchester can be heard declaring that the war between the angels is going to happen with intense fight scenes showed.

Other parts of the promo video teased that Crowley (Mark Sheppard) finally told the hunters where he hid the "First Blade" weapon and it is not a pleasant location. Sam expressed revulsion over the fact that they had to dig a grave and get the weapon in a decomposing corpse.

Credit: YouTube/MiraclePromos

According to the Examiner report, the brand new episode will have Castiel (Misha Collins) asking for Sam and Dean's help in interrogating an angel of Metatron that he captured. Additionally, Castiel will be meeting Metatron's right-hand man Gadreel (Tahmoh Penikett).

"Supernatural fan" can expect intense scenes between the angels as the promotional photos show some angel action happening and ruining the Castiel-Gadreel meeting. Click HERE to see photos.

Meanwhile, the red-haired demon Abaddon (Alaina Huffman) will demand Crowley in helping her with her plan of killing the Winchester brothers. The King of Hell refused to help but Abaddon revealed her bargaining chip that will shock Crowley.

There are still a lot of storylines left hanging in "Supernatural" Season 9 but it looks like the remaining episodes leading to the season finale will be able to cap them off. Watch Castiel, Sam and Dean working together in the angel war, Abaddon and Crowley's confrontation and the effect of the "First Blade and the "Mark of Cain" on Dean in "Supernatural" Season 9, Episode 21 "King of the Damned" airing on Tuesday night, May 6, at 9 pm ET on the CW Network.

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