Trevor Evans and the Pontypandy Pioneers are on a bus trip. Suddenly, the bus spins off the road and is hanging off a cliff by 2 wheels. Meanwhile, Sam, Penny and Elvis are collecting buckets and pans because the roof is leaking at the fire station. Sam hopes they can last without the pans until the new fire station is built. Mike Flood says that the pipes are just too old and rusty to fix and Chief Fire Officer Boyce also says that the roof needs replacing and the floors are crooked and announces that they will have to shut down the old fire station immediately, much to the shock of the crew. In the meantime, the team will have to coordinate rescues from a Mobile Command Unit whilst the new fire station is being built. Sam says "it'll be a shame to leave the old place though" and Elvis wonders if they're going to have any more rescues on their last day. Then, the Teleprinter starts beeping and their sent to Trevor and the Pontypandy Pioneers in the stranded bus. They use Venus' winch to try and pull the bus back up, but the bus was too heavy so Sam opens the bus door & instructs everyone to come towards the door very carefully which everyone manages except Dilys who is to scared to move, so Sam risks his life and goes inside the bus and gets Dilys out safely. Then Venus starts getting pulled toward the cliff and Sam tells Elvis to get the wire cutters and he hangs onto the winch and cuts the wire. But sadly, Trevor's Bus didn't make it and Sam comes out with the quote "Just another day in Pontypandy".
Meanwhile at the Mountain Activity Centre, Moose and Tom are using Moose’s new amphibious vehicle to take wildlife photographs, but they haven’t quite mastered the controls yet. At the Mobile Command Unit, they're trying to fix their radio signals and Elvis accidentally rips the map of Pontypandy whilst writing a song for the grand opening. Moose and Tom are now stuck in the sea and have to call Fireman Sam. They drive to the Ocean Rescue Centre and have to use all 3 boats to find them because nobody else could fly Tom's helicopter. They finally find them and bring them back to shore. Then we see small clips of emergencies such as a bin fire at the train station and the station being built. And finally once Station Officer Steele and Chief Fire Officer Boyce have finished checking requirements its time for the grand opening.
We see an aerial shot of the fire station and notice that as well as a new fire station, the crew have been issued with new jackets (with no explanation given). Elvis then sings his new song "Pontypandy Rocks" and Chief Fire Officer Boyce declares the new fire station open. Then, he gives the guided tour of the station as well as introducing two new firefighters, Arnold McKinley and Ellie Phillips. All is well in the fire station now apart from Elvis messing up in the first training session and Station Officer Steele tries to gather how the new control system & The Map-screen 700 works. The next day, Penny takes Norman, Mandy, Sarah and James on a pot-holing trip in the old mines.
Elsewhere at sea, Charlie and coastguard Ben see a hurricane has rapidly developed and is heading straight for Pontypandy: they immediately warn Sam. So it’s action stations as Sam has to rescue Penny and the kids from the old mines while Elvis helps prepare Pontypandy for the storm and is left in charge and collects everyone and takes them to the fire station. But a fire starts at Joe's garage and Elvis tells Arnold and Ellie that they need sticky foam to put this fire out. Meanwhile at the mines, Sam gets everyone out and to shelter at the Mountain Activity Centre before he and Penny take Moose's vehicle (named the Natter Jat toad at this part) to head back to Pontypandy.
Station Officer Steele asks Elvis how the emergency was going and tells him they're on their way back and Station Officer Steele hopes nothing else happens, but then the lightning strikes some left over building supplies and sets them alight. Station Officer Steele informs Elvis the situation and tells him to hurry back to the station otherwise the fire will reach the gas canisters and they'll explode. But as they're racing down the streets, a tree falls and blocks Jupiter's path. But Elvis spots that Venus can get through so he and Arnold drive back to the station (and at this point the cabin is fully alight) and start flooding towards the canisters, but they need more water. Station Officer Steele tells Ellie to get everyone a safe distance away and luckily Sam and Penny arrive. But without Jupiter, they can't get any water. However, Sam thinks that the training hoses can reach from the extra main outlets. So, he fetches two rolls of hoses and he and Elvis fight the fire while Penny cools the canisters and soon the fire is out.
The hurricane passes and life is back to normal in Pontypandy. Trevor gets a new bus (which is still the same but has a different interior) and Moose donates his amphibious vehicle to the team and Arnold names it Hydrus.
- Fireman Sam
- Penny Morris
- Elvis Cridlington
- Station Officer Steele
- Chief Fire Officer Boyce
- Sarah and James
- Mandy Flood
- Norman Price
- Derek Price
- Tom Thomas
- Ben Hooper
- Moose Roberts
- Bronwyn Jones
- Charlie Jones
- Gareth Griffiths
- Trevor Evans
- Joe Sparkes
- Hannah Sparkes
- Lizzie Sparkes
- Mike Flood
- Helen Flood
- Dilys Price
- Mrs. Chen
- Lily Chen
- Radar (intro only)
- The Catfish/Hydrus
- Mobile Command Unit
- Nurse Flood's Car
- Mike's Van
- Trevor's Bus
- The Pontypandy Flyer
- The Skiff
- Wallaby 1 (intro only)
- Steven Kynman as Sam, Elvis, Norman, Derek and Charlie
- David Carling as Station Officer Steele, Chief Fire Officer Boyce, Trevor, Tom and Mike
- Tegwen Tucker as Penny, Sarah, Bronwyn and Mrs. Chen
- John Hasler as James and Arnold
- Su Douglas as Dilys, Mandy, Helen and Lily
- Alex Lowe as Ben and Joe
- Ifan Huw Dafydd as Gareth
- Nigel Whitmey as Moose
- Jo Wyatt as Hannah and Lizzie
- Harriet Kershaw as Ellie
- Andrew Hodwitz as Sam and Elvis
- Jonah Ain as James
- Margaret Brock as Bronwyn, Hannah, Lizzie and Mrs. Chen
- Lily Cassano as Sarah, Mandy and Lily
- Jacob James as Charlie and Ben
- Scott Lancastle as Mike
- Ashley Magwood as Penny
- Joe Marth as Dept Fire Chief Boyce and Gareth
- Dave Pender as Fire Captain Steele
- Mike Pongracz as Trevor and Joe
- Becky Shrimpton as Helen
- Sarah Lynn Strange as Dilys
- Carter Treneer as Norman and Derek
- David Carling as Tom
- Nigel Whitmey as Moose
- It was released with a limited theatrical run on March 21st, 2015 in Australia and in Glasgow, Scotland on September 13th.
- This special aired on ABC4 and made available for ABCiview on October 25th, 2015.
- This special aired on Cartoonito UK on July 25th, 2016 and on Channel 5 on July 30th, 2017.
- This special introduces The Catfish to the series, which goes through various names (the Duck-Billed Platapus by Tom & the Natter Jack Toad by Moose) before eventually being given to the firefighters by Moose and christened "Hydrus" by Arnold at the end of the special. The Mobile Command Unit is also introduced.
- A new, much bigger fire station is built with 4 vehicle bays that can hold up to 5 fire engines.
- First time Ben drives Neptune.
- This special introduces the new firefighters Arnold McKinley and Ellie Phillips to the series.
- New modern looking hoses will be used instead of the old fashioned Brass hoses used since series 5.
- The firefighters' clothing has been slightly upgraded with new coats which get rid of the 1980s style buttons and replace them with 3 metal clips it also has a walkie talkie attached to the chest and a upgraded belt which replaces the buckle with a plastic clip.
- The interior of the Mountain Activity Centre is seen for the second time.
- Station Officer Steele now uses a radio headset to communicate through to Jupiter, Venus and Mercury on emergencies, including a fixed radio in the Mountain Activity Centre.
- At the end of the film, Trevor gets a new bus (still the same but with a different interior).
- This was the last time the crest logo was used, from Series 10 a flame logo will be used.
- This was the last time the firefighters wore their turnout gear in the fire station. From series 10 onwards they now have proper stationwear.
- There's a fire outside the fire station but its pouring down with rain.
- In some scenes, Jupiters rear striping is wrong
- When Ben radios Sam from Neptune, he is wearing his formal clothing, but when the storm kicks in he's wearing the Ocean rescue uniform
- Sam drove Bessie to the mine and later Gareth is seen driving the Pontypandy Flyer back to the station after taking Penny and the kids to the mine but how could both vehicles get past each other with one railway line.
- Sam should have known that the hoses would reach the fire from the hydrants as Chief Fire Officer Boyce told them.