A new engine had arrived on Sodor. He was a green and yellow LSWR M7 named Chris, and he puffed over the Vicarstown bridge to meet Sir Tophman Hatt at Suddery Station. "I'm here, sir! Am I on time?" Chris cheerfully puffed.
"Right on time, Chris. I am Sir Topham Hatt, the controller of the railway." There at the station was Edward, who had just arrived at the station with some coaches. "Edward, this is Chris. Your job for today will be to take him to Knapford station and show him how to shunt trucks and coaches." Sir Topham Hatt boomed.
"Right away, sir!" Edward puffed, cheerfully. He was uncoupled from his coaches and the two engines puffed into Knapford Station. It was the busiest station on the island and therefore the busiest. Engines were quickly puffing about with trains of trucks and coaches in and out of the station. Suddenly, a big, blue engine thundered by, proudly whistling,

"Express coming through!" This startled Chris, and he asked Edward,

"Who is that?" Edward replied,

"That, Chris, is Gordon. He is a very important engine who sometimes can get a little too big for his buffers. Don't tell him I said that."

"I won't." Chris replied. Soon, the two engines were hard at work. Edward was teaching Chris a lot about the troublesome trucks.

"Take great care with trucks, Chris. They like to cause mischief." Edward warned Chris. The young engine was having fun playing with the trucks. He would sneak up behind them and give them a bump, and they would go rolling into a set of buffers.

"Oh! Ow!" They cried. Chris didn't really pay any attention to Edward's warning. He was too busy having fun in the yard.

"Are you even listening?" Edward snapped as Chris bumped and bashed the trucks around the yard.

"Oh, yes! The troublesome trucks can be very mischievous. I'll try my best to keep them in order!" Chris said, confidently.

"Very well then. I've arranged a train of trucks for you to take to the depot in Vicarstown." Edward puffed. In no time, Chris was puffing down the line.

"Ah, it's great to be an engine, steaming along the line!" he chortled to himself. However, the troublesome trucks were in to kill Chris' vibe.

"It's terrible to be coupled behind an engine like you!" giggled a truck. The other trucks howled with laughter as Chris continued down the line.

"Be quiet!" Chris snapped at the trucks. When they reached the top of Gordon's hill, they then played their tricks.

"ON! ON! FASTER! FASTER!" They screamed. The train surged down the hill and flew down the line. Chris' driver applied the brakes, but they were no good.

"Help! HELP!" Chris wailed as he was thundering down the line, out of control. A signalman diverted the runaway train onto a siding. Chris braked hard, but the trucks' momentum caused them to derail. Chris was still on the rails, but the trucks had come off of the tracks and blocked the other line. Edward arrived with Rocky to clean up the mess, and Sir Topham Hatt was also with him and was annoyed.

"I told him, but he didn't listen!" Edward told Sir Topham Hatt.

"Chris, I understand you are new to my railway, therefore you have a lot to learn. It would be in your best interest to heed the advice of engines concerning matters such as this." Sir Topham Hatt said, Sternly.

"Yes sir, sorry sir." Chris said. Soon, Chris was back at work, and is learning how to be a really useful engine.