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"Help! Help!"
— Dennis

Thomas' Day Off is the eighteenth episode of the ninth season.


The Fat Controller announces to his engines that a new diesel engine called Dennis has arrived on Sodor and tells Thomas that he is being given a day off after his recent spell of busy work. Thomas decides to spend his day off by going to the washdown and then to Bluff's Cove. On his way there, Thomas sees the new diesel struggling to shunt some trucks of bricks. Dennis tells Thomas that he cannot shunt the trucks, so Thomas decides to help Dennis, even though it's his day off. Afterwards, Thomas goes off to the washdown.

But Dennis is far from happy - he does not want to take the trucks of tiles to the school because he is lazy. Thomas soon arrives back from the washdown and Dennis decides to take full advantage of Thomas' free time; he asks him to show him the way to the school. Thomas helps Dennis by telling him where to go when they reach a junction. But again, Dennis is not pleased as he watches Thomas heading towards Bluff's Cove. Then Dennis plays another trick. He blows his horn to attract Thomas' attention. Thomas comes back and Dennis pretends that his engine had overheated. Thomas decides to help Dennis by finding another engine to help him.

Dennis is fed up that his trick had backfired on him, but then he decides to run away from his work so that another engine will have to take the trucks of tiles for him. However, as he runs away, Dennis derails and ends up wheel-deep in mud. Again Dennis calls for help, but no one is around to assist him this time.

Nearing Bluff's Cove, Thomas hears some urgent news from Percy at a signalbox. The workmen are waiting for Dennis' delivery at Bluff's Cove School and do not know where he is. Thomas knows of Dennis' whereabouts and goes off to find him. When Thomas finds Dennis stuck in the mud, he is very puzzled; he thought Dennis had broken down. Dennis owns up to his pranks, explaining that he is a very lazy diesel. Thomas decides to help Dennis again. Together, they get the trucks of tiles to Bluff's Cove School. The Fat Controller is cross with his new diesel's behaviour. Dennis promises the Fat Controller and Thomas that he will be a Really Useful Engine from now on.




  • This episode marks Dennis' first and only speaking role to date and his only appearance until The Great Discovery.
  • Going by production order, this is the twenty-second episode of the ninth season.


  • The narrator says Dennis was huffing and puffing, but Dennis is a diesel.
  • When Thomas leaves to find Dennis after hearing about the school roof from Percy, he goes forwards when he should have gone backwards. Likewise, in the next scene, Thomas approaches Dennis going forwards instead of going backwards.


In Other Languages

Language Name Meaning
Dutch Thomas Heeft Een Dag Vrij Thomas Has a Free Day 
German Dennis Ist Faul Dennis is Lazy
Finnish Tuomaksen Vapaapäivä Thomas' Day Off
Swedish Thomas Lediga Dag Thomas' Free Day
Norwegian Thomas Har Fridag Thomas Has a Day Off
Danish Thomas Holder Fri Thomas Holds Free
Spanish El Día Libre de Thomas Thomas' Free Day
Portuguese O Dia Livre de Thomas Thomas' Day Off
French Dennis: Le Nouvel Train / Le Jour de Congé d'Thomas (Québec) Dennis: The New Engine / Thomas' Day Off (Canada)
Catalan Thomas Dia de Descans Thomas' Day Off
Italian Il Giorno di Riposo di Thomas Thomas' Day Off
Greek Ντένις: ο νέος κινητήρας Dennis: The New Engine
Japanese なまけもののデニス Lazy Dennis
Russian Томас берёт выходной Thomas Takes Off
Chinese 托马斯的休息日 Thomas' Day of the Rest
Korean 게으름뱅이 데니스 Idler Dennis
Thai วันหยุดของโธมัส Thomas' Holiday
Czech Tomáš ma Volno Thomas Has a Day Off
Slovak Thomas má Voľno Thomas Takes it Free
Hungarian Thomas Szabadnapja Thomas' Free Day
Finnish Tuomaksen Vapaapäivä Thomas' Day Off
Gaelic Latha-Saor do Tomas A Holiday for Thomas
Romanian Ziua Liberă a lui Thomas Thomas' Free Day
Polish Wolny Dzień Tomka Thomas' Free Day

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