“Infinity train” is one of the most popular cartoons in the U.S. currently. It follows different people in different places at different times. For example, one person wakes up in a big forest and another person ends up in a snowy field. The infinity train can be anywhere at any given moment in time. The train gives every passenger a number on their hand and they have to get that number down to zero to get off the train. The only way to get on the train is if the train picks you to get on. The show started on August 5, 2019, has had a good run ever since, and will have more seasons in the future. 

     Book four now follows two old friends with dreams of becoming rock stars who find themselves on the infinity train. But first, they must solve the locomotive's inner puzzles and as well as their relationship to return home. These two best friend’s names are Min-Gi Park and Ryan Akagi. Since they were little, their dream has been to start a band together and play in New York City. When they split apart for a while and lose interest in each other, that dream just fades away. One night, after playing for an open mic, Ryan decides to go pay Min-Gi a visit and ask him to come with him to New York so they could follow their dreams. When Min-Gi gets accepted into a great college, he unsure if he should go with Ryan to start a band with his best friend or if he should go to college and start an occupation that he may or may not like, but when Ryan takes his keys and runs away, he decides to chase after him for the keys. They got on a city train and ran around and when a random door opened, Ryan decided to throw Min-Gi keys in the door.  They both ran into the door to get the keys but woke up in a random place. 

     They are both stuck on an iceberg where they are woken up by a talking bell named Kez. Min-Gi and Ryan are confused, Kez tells them that they are stuck on the train and that they will have to travel through the train to learn lessons about themselves and to get to understand each other better. But when Ryan took Min-Gi’s keys, Min-Gi got mad at him and did not want to do anything with him. All Min-Gi wanted was to get off the train. Ryan was mad at Min-Gi because they wanted to be in a band together ever since they were little. When Min-Gi decided to go to college and ditch Ryan, Ryan was upset and felt like he was not going anywhere and Min-Gi was going to go do big things. So they were so mad at each other, they did not even want to see each other. But Kez told them that the only way to get through the train and get off of it was to learn and fix all the mistakes that they made in their lives. So they make up to get off of the train. They go through trial and error just to get through one car, but when they finally stop and think about what they are doing, they find the right way to get out. 

     This show has so many ups and downs with the characters and, although it’s the same thing each season, it's different people learning more about themselves. Like in the first season, viewers meet Tulip. Tulip’s problem was that she did not think that her parents cared for her because she never got what she wanted and she felt like her parent’s divorce was her fault. Before she got on the train, she headed to a game design camp to learn about how to code. However, when her parents say that she could not go because it would mess up things in their daily life, she gets mad and runs away by herself. That is when a train comes out of nowhere. They think that it will be able to take her to camp, but when she gets on, she ends up in a snowy field and meets One-One, a little robot that controls the entire train, but has gotten lost because the fake conductor took over his job and is now controlling the train.

     This show is good but it does have some places in it that are a little boring and could be fixed but overall this show a 3.5/5 it could be better in some places. “Infinity Train” can be watched only on HBOmax.