Sam and Dean in front of the Impala
Sam and Dean in front of the ImpalaFacebook/Supernatural

"Supernatural" Season 11 will be back on track with the Amara/Lucifer storyline with the upcoming episode 18 titled "Hell's Angel." The upcoming episode will also see the King of Hell Crowley (Mark Sheppard) helping the boys find a way to destroy Amara (Emily Swallow).

From the promo for "Hell's Angel," it is clear that Lucifer (Mark Pellegrino), who is currently residing in Castiel's (Misha Collins) meat suit, has taken over the leadership of heaven. Begrudgingly, his brothers and sisters are following the fallen Angel's orders. He even tells them to call him God if it would make them comfy.

The trailer for the episode also suggests that Amara is planning her next move and the world is feeling the repercussions of her anger. As Dean (Jensen Ackles) puts it, she is soon going to "delete the universe" that her brother God created. Crowley may have a solution for the Amara situation, but it definitely isn't going to be an easy one.

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Crowley's plan involves procuring the "horn of Joshua." As fans know, Joshua (Roger Aaron Brown) is the only Angel who is known to be speaking with God after he went MIA. However, he had specified that these conversations with God were most one-sided, with the father talking and him listening.

Finding Joshua will itself be a trial for the Sam (Jared Padalecki) and Dean, considering his whereabouts is unknown ever since Metatron (Curtis Armstrong) expelled all angels from Heaven. The brothers will, in fact, have to do much more than finding the horn, they might have to use it to God and asking him for help.

Watch Season 11 episode 18 of "Supernatural" at 9 p.m. (EST) Wednesday, April 6, 2016. You can also live-stream "Hell's Angel" via The CW Seed and CWINGO.