In Chuggington,where is located in 150km away from Knapford,a red diesel engine was on his way to the sheds, but a diesel with a big grabble came from siding and they got crashed.
One day on sodor, Sir Topham Hatt anounced that a new route between Vicarstown and Chuggington is going to be open in a month.Everyone was excited to go to Chuggington.
In the day of afternoon, Thomas went to Brendam Docks to deliver a passengers to the ship. While waiting, Carly told him that three new engines will come to Sodor by ship.Soon, a huge boat came to the Docks.There were three engines whose name were Wilson,Brewster and Koko.Wilson is a helpful red diesel,Brewster is a big Blue,and Koko is a fast express engine.Sir Topham Hatt introduced that they came from Chugington.He asked Thomas to show around Sodor to the newcomers.
That night,Thomas came back from his Sodor tour.Wilson,Brewster and Koko decided to stay Tidmouth Sheds.All the steam team was praised them and enjoyed talking about Chuggington.
The next day, Wilson asked his job to deliver a goods train to the Mainland. As he departs from shunting yard, a square diesel named Dodge was there. He went to the Mainland and went to the Old City,which was ruined 30 years ago.
In the Old City, there was Diesel 10, who is the evilest engine and Splatter and Dim, his chief.He asked Dodge about Sodor, and when Dodge told Diesel 10 that Wilson was in Sodor, he chuckled.Then they went to the Chug Patrol Center to tell the fake accident in the Bridlington Goods Yard. All the patrollers went to the gods yard, they destroyed the signal system between Chuggington and Bridlington. The patrollers couldn't go back to Chuggington.
Wilson arrived at the Bridlington. Soon, he heard a familiar voice,"Chug Patrol, ready to rescue!" He found his friends in Chuggington, Jackman, Calley and Asher. They looked all around the yard, but there was no accident. They decided to go back to Chuggington but the signal didn't turn blue. They asked Wilson to follow him. So the patrollers also came to the Island of Sodor, too.
Meanwhile on Sodor, Sir Topham Hatt asked Emily and Rebecca to go to Chuggington to check the new route's condition.After she arrived at Chuggington, All the chuggers and Vee, the head of Chuggington Railway -except Wilson, Brewster, Koko and all the Chug Patrol Team- welcomed them. Emily and Rebecca stayed in the Chuggington Sheds.
At that night, Wilson and patrollers arrived at Knapford. There were Brewster, taking the goods train and Koko, taking passengers. They were surprised to meet old friends in Chuggington. Koko suggested patrollers that they should stay in Sodor Search and Rescue Center.
Next morning in Chuggington, all the engines went to work. After all the engines left, Diesel 10 and his fellows came to the sheds. Then they destroyed the track to Chuggington, except the route to Old City.
That night, all the chuggers , Emily and Rebecca arrived at Chuggington, but Diesel 10 and his fellows occupy the town. Harrison and Chatsworth went to persuade them.
Diesel 10 told Harrison and Chatsworth about his past. He was always treated less important and there was nowhere which is called his home. Harrison told that it is wrong to occupy others' home. But Diesel 10 didn't listen and tried to imprison two engines, Chatsworth could escape, but Harrison couldn't.
Chatsworth told Emily and Rebecca to call for help to the engines on Sodor. They went to Sodor.
At Sodor, all the engines decided to his friends in Chuggington.
- Annie and Clarabel
- Sir Topham Hatt
- Diesel 10
- Donald and Douglas(Cameo)
- Wilson(From Chuggington)
- Brewster(From Chuggington)
- Koko(Fron Chuggington)
- Jackman(From Chuggington)
- Calley(From Chuggington)
- Asher(From Chuggington)
- Vee（From Chuggington)
- Harrison(From Chuggington）
- Chatsworth(From Chuggington)
- Pete(From Chuggington)
- Dumber(From Chuggington)
- Zephie(From Chuggington)
- Hoot and Toot(From Chuggington)
- Hodge(From Chuggington)
- Diesel Blue Satan