At the train factory, Titipo is learning and practicing running. He is eager to go to the train village, but Teo, the mechanic, says Titipo isn't ready yet. While Teo has gone to repair another train, Titipo secretly sneaks out of the train factory.

Finally, Titipo is bound for train village! On his way to the train village, Titipo meets many different trains, such as diesel, the little freight train, eric, the commuter train, singing, the high-speed train, and the inseparable duo, Fix the repair train and lift the forklift truck.

Titipo has finally arrived at train village, but he's feeling down because he is not in operation yet. But when a problem arises with another train, Titipo goes to fill in his place. Titipo is excited that he is finally in operation, but things don't go as planned.

Diesel makes fun of Titipo for making a mistake on his first day of operation. When Titipo says that no train does great at the beginning, Diesel brags that he was perfect from the very beginning. Hearing this, Titipo practices and practices, but ends up making a mistake while in operation because he didn't get enough sleep.

After visiting the quarry where Diesel works, Titipo starts to look up to the strong and powerful freight trains. Titipo starts to imitate the freight trains with the hope of becoming like one of them.

Xingxing, the little high-speed train, doesn't get along well with her other friends because of her arrogant attitude and daily schedule. Titipo thinks of a plan to get Xingxing closer with everyone. A few days later, Titipo brings Xingxing to their friends to put his plan into action. Thanks to all the friends who noticed her efforts to get along with them, Xingxing grows closer to everyone.

Titipo meets Manny, the freight train, who is new to Train Village. After talking to him, Titipo thinks Manny is a brave and hearty train. Titipo goes back to Train Village and tells everyone what a great train he thinks Manny is. Hearing this, everyone is curious about Manny. However, Manny is completely different from how Titipo described him.

It is a holiday! Titipo suggests going on a picnic, but everyone has to operate that day. Titipo is disappointed, but when he learns that the hangar is resting today, he runs over to play with the setter. Setter doesn't enjoy playing outside that much but follows Titipo outside after Titipo begs.

Titipo feels like there's something wrong with his body. He describes his symptoms to diesel, who says he will feel better after an inspection. He exaggerates and tells him that inspections are very scary. Titipo is terrified and pretends that he isn't sick and continues to operate. However, his condition gets worse, and he ends up stopping in the middle of the road.

Berny is depressed that he doesn't work as well as Manny. Berny asks Diesel to help him become as valiant as Manny, and he does his best to do so by listening to Diesel's advice.

Mr. Herb comes back to Train Village from work, and the little trains greet him as always. But unlike any other day, Mr. Herb looks uncomfortable and doesn't answer back. The little trains think he's acting strangely. Then, the little trains each remember something they have done wrong to Mr. Herb and are sad that they may have made him mad.

Titipo is tired because of his busy schedule and gets jealous of Fix and Lift, who seem relaxed with their easier schedule. Hearing what the other trains have to say about them, the misunderstanding worsens. One day, Titipo catches Fix and Lift getting ready to go out. Thinking they are going out to play, he tags along.

Today is Eric's day for his regular inspection, and Titipo, who is free, takes his place for the day. Eric is worried because Titipo doesn't have experience in long-distance travel. When Eric tries to train Titipo, Titipo fools around and doesn't act seriously enough. Eric worries if Titipo will do a good job.

Genie goes out to work as always, and at a small stop, she sees a dog who is looking at each passenger getting off the train. as if desperately looking for someone. After going back to Train Village, Genie tells everyone about the dog she had met that day. Everyone thinks that the dog might have lost its owner. Genie starts to worry about the dog and starts to look out for it.

Titipo from Train Village thinks well of Tayo the Little Bus, who joyfully does his job. Tayo also thinks well of Titipo for his train-like personality. The two hope to meet each other more often and become good friends. On a day when Tayo and Titipo are free, the two decide to go out on a picnic by the sea.

Upon Mr. Herb's request, Titipo, Genie, and Diesel take care of Loco, a newbie, for the day. Titipo is responsible for bringing Loco to Train Village from the train factory. Each train wants to show off to Loco. However, things don't go as planned, and the little trains keep making mistakes in front of Loco.

Diesel gets an autograph by a superstar, which is a dream come true for him. Determined to keep that autograph forever, he refuses to get washed and get dirtier day by day. He starts to even smell. His friends beg Diesel to wash, but he's just too stubborn.

Titipo hears the news that the TV station is coming to interview the little trains, and he's excited about being on TV. It's finally the day when the news reporter is coming to visit, and Titipo is excited. He hurries and tries to finish work so that he can go back to Train Village for the interview. However, things happen while he is operating, and Titipo ends up being late for the interview.

The sky looks darker than usual today, and the little trains are worried. Fix and Lift warn the little trains that there may be a storm coming, but Diesel ignores their warning and goes out. After Diesel leaves, the weather gets worse. Thunder roars and lightning flashes. Titipo and Genie become worried about Diesel and go out to find him.

Mr. Herb tells Diesel that the youngest freight train, Loco, should do the job well for the freight train. He says no train knows as much about the freight train as he is. Loco learns to work alongside Diesel in a harbor or quarry. Thanks to Diesel's well-taught knowledge, Loco works well even it's a first time. Everyone praises Loco, who is doing a good job, and Diesel is getting sad about praising Loco without anyone seeing what he has taught.

Titipo goes to see the locomotive Steam with Eric's suggestion. Steam, an old locomotive exhibited in a quiet area, tells many old stories. Titipo envies Steam because Steam doesn't have to do work and always rest at the station where it does not operate anymore. But Steam wants to run like Titipo.

Genie always keeps herself clean, while Diesel doesn't wash well and breaks down easily. Teo is worried and tells Diesel that if he washes as much as Genie, he won't come in so much for repairs. Genie, who wants to help Diesel, keeps on nagging him to wash. Diesel is annoyed with her sudden nagging and comes up with a plan to pull a prank on her.

Loco is going out on night service for the very first time. Loco is terrified even before going out, and Mr. Herb encourages him as much as he can. However, because of a sudden change in weather and a power failure, it becomes one of Loco's scariest moments in his life. Loco comes back to Train Village in tears and vows never to go out on night service again.

Mr. Herb, who never seems to make a mistake, accidentally pours water on the control panel, and the microphone breaks. The control center is in trouble. There are many things to communicate with the microphone, and since the microphone is broken, Mr. Herb is in trouble. Titipo, Diesel, and Genie step up to help Mr. Herb, and they keep themselves very busy, acting as his hands and feet.