'Stranger Things' has dropped the first season 4 trailer

Stranger Things has dropped its first trailer for the long-awaited season four, showing a war coming to Hawkins.

The three-minute trailer for the Netflix series features plenty of scenes from the terrifying Upside Down and begins with a creepy voiceover announcing: "You've broken everything. Your suffering is almost at an end."

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As the series opens, Eleven (Millie Bobby Brown) is shown living far away from her friends and she claims to have lost her supernatural powers.

Dr Sam Owens sits in a diner with her as he tells her: "A war is coming. I'm afraid your friends in Hawkins are very much in the eye of the storm."

But she replies: "I don't have my powers."

However, Dr Sam leaves her under no illusion how important it is for her to relocate her special powers as he explains: "Without you, we can't win this war."

The trailer also shows Hopper (David Harbour) being kept in a Russian prison after the events of the last series, which saw him try to come to the aid of Eleven and her friends as they battled against the Upside Down and a portal leading to it.

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It looks as though conditions are tough for Hopper, who is being kept chained up and with a mask over his face in a sparse-looking cell.

Max (Sadie Sink) is shown at brother Billy's graveside after his redeeming death last season, telling him what a disaster life has turned into since she lost him.

The rest of the gang are shown trying and failing to resume normal life at school, which as ever includes being the less-than-popular kids.

Meanwhile, Will's mum Joyce (Winona Ryder) looks as troubled as ever by the turn life has taken for her family, while Mike's older sister Nancy (Natalia Dyer) continues her brave crusade against the Upside Down as she tells Steve (Joe Keery) "See you on the other side".

Stranger Things season four is expected to be the penultimate series of the show and will begin streaming on Netflix on 27 May.

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