The two-part special for the 32nd series will see the BBC medical series transport viewers to a French refugee camp.
As part of the special story, Dylan Keogh (played by Will Beck), David Hide (Jason Durr) and Louise Tyler (Azuka Oforka) will head to northern France to offer medical assistance.
However, things will be far from simple when Dylan forms a bond with two of the children which will cause tensions to rise.
Actor Will explained: "It was so nice to do a story set away from the hospital, the look and feel is more filmic.”
He went on to say: "The main thing, however, was the importance of telling this story, which has been slightly forgotten in the news recently, and realising, when you boil it down to one human story, just how relevant it still is."
The episodes were penned by writers Dana Fainaru and Dominique Maloney and filmed in Cardiff and Fishguard.
Casualty is set to take on a big story in its new series
Charlie Fairhead looks shocked in BBC medical series Casualty
The main thing, however, was the importance of telling this story, which has been slightly forgotten in the news recently, and realising, when you boil it down to one human story, just how relevant it still is
Casualty star Will Beck
News of season 32 of Casualty comes hours after the BBC aired a special one-shot episode to mark the end of the programme's 30th anniversary year.
Along with the refugee camp story, the new series of Casualty will feature an extended 70-minute special and will reveal the results of the inquest into Scott Ellisson’s (Will Austin) death finally made public.
It promises to be the best yet with Hollywood actress Sharon Glees also making an appearance.
Dylan Keogh will be going to the French refugee camp in Casualty
Casualty 30th anniversary: Hollywood stars before they were famous
Fri, August 26, 2016
As Casualty celebrates it's 30th anniversary, we take a look at the Hollywood stars who found fame on the hit BBC medical drama.
1 of 16
Hollywood heartthrob Tom Hiddleston is almost unrecognisable in his Casualty days
Catherine Shipton as Nurse Duffy in Casualty
The 74-year-old actress, whose credits include Burn notice and Cagney & Lacey, will be portraying surgery maestro Zsa Zsa Harper-Jenkinson.
US actress Sharon said: "I'm a rabid Anglophile. Some of our finest American TV is British. Zsa Zsa is a wonderful character and I hope you all enjoy her too."
Casualty has been making the headlines after it was revealed that actor Derek Thompson – who has played Charlie Fairhead since the show’s inception – was one of the BBC’s most highly paid actors.
Casualty airs on BBC One on Saturdays at 9pm.