Pending Train: 8:23, Ashita Kimi to — Season 1

Naoya Kayashima (Yamada Yuki), a charismatic hairdresser who works at a beauty salon in Omotesando, is about to board a train, wondering whether or not he should meet a certain person. At the same time, high school physical education teacher Sae Hatano (Moeka Kamishiraishi) was on the station platform on her way to work. Ahead of her gaze is the figure of Yuto Shirahama (Eiji Akaso), a firefighter with whom she secretly has feelings. Yuto was also waiting for the train with some complicated feelings in his mind.

Naoya (Yamada Yuki) and his friends learn that they have been transported along with the train 30 years into the future, and at the suggestion of Sae (Kamishiraishi Moka), each of them donates their belongings to survive the extreme situation together. to redistribute it equally. However, just as Yuto (Eiji Akaso) begins to gather food and water, he finds evidence that someone has taken a cart containing a large amount of drinks. Kayoko (Yasuko Matsuyuki) becomes suspicious as to who the culprit is, Rena (Kotone Furukawa) and Yonezawa (Joichiro Fujiwara) clash over the remaining mobile battery, and Naoya and Yu set out to find a water source in the sea of trees. To and Kato (Inowaki Kai) who tries to create water from plants... While everyone is desperately struggling to survive, one person unexpectedly begins to act out of control.

Just when it seemed like there was some hope for the passengers as Naoya (Yamada Yuki) and his friends found a water source and were able to secure drinking water, a bag containing scissors, a hairdresser's tool that Naoya treasured, was discovered. A situation arises where Tanaka (Tetta Sugimoto) takes away the police. When questioned, Tanaka says that he saw a suspicious person wearing a hat and brought scissors for self-defense. Naoya can't believe Tanaka's claims and gets irritated when his bag is lost. Meanwhile, Yuto (Eiji Akaso) and his friends go to get food, but suddenly something strange happens to Sae (Moka Kamishiraishi)... Furthermore, Kayoko (Yasuko Matsuyuki) is losing hope of living here... More trials will befall the passengers...

An emergency occurs when Kato (Mi Inowaki), who was exploring the forest, is stabbed by someone with a knife! A person wearing a cap, believed to be the culprit, immediately flees the scene. To save Kato's life, Naoya (Yamada Yuki) and Sae (Kamishiraishi Moka) collect items from passengers' belongings that can be used to treat wounds, and they procure medicinal herbs from the forest based on the notes left by Kato. Yonezawa (Fujiwara Joichiro) and his friends arrive. Kazuma (Wataru Hinata), who aspires to be a doctor, also joins the group, and the passengers work together as one to carry out intensive treatment. However, in the midst of all this, Yuto (Eiji Akaso) suddenly remembers his painful past where he injured a senior member of the team at the scene of a fire.

Naoya (Yamada Yuki), Yuto (Akaso Eiji), and Sae (Kamishiraishi Moka) encounter the people of "Car 6" who were sent to the future at the same time as their "Car 5". When visiting their place of residence with the guidance of Yamamoto (Masato Hagiwara), the president of an IT company and the leader of Car 6, and Uemura (Eiji Wentz), who works at a construction company, I find that there is a kitchen and a toilet. Enjoy a fulfilling life with a bath and even a private room! To return to their original world, Naoya and his friends propose cooperating with the passengers in Car 5, but they cannot trust Yamamoto and his friends easily. However, Yamamoto tells him one after another shocking facts about why the future world turned out the way it did, and the clues to returning to the original world. Just then, Sae finds out that Yuto has someone she likes... The relationship between Naoya, Yuto, and Sae begins to change.

Sae (Moka Kamishiraishi) and Rena (Kotone Furukawa) are walking through a sea of trees when they find a dead body buried there. Yajima (Suzunosuke), a passenger in Car 6, appears in front of the stunned duo and tries to catch them, but Sae is the only one who is unable to escape. After hearing about the situation from Rena, who ran away, the members of Car No. 5 decide to make a weapon for self-defense with the help of Yonezawa (Joichiro Fujiwara). The people in Car 5 are beginning to see the people in Car 6 as the enemy, as they are stabbing Kato (Mi Inowaki) and putting Sae in danger. Meanwhile, Naoya (Yamada Yuki) and Yuto (Akaso Eiji) arrive at car No. 6 in search of Sae, witness a shocking scene inside the car, and question Yamamoto (Hagiwara Masato). Then Yamamoto starts talking about the "incident" that happened on the day of the time warp...

As people who wish to move from Car No. 6 to Car No. 5, where the security situation has deteriorated, begin to appear, Yuto (Eiji Akaso) and his friends find a logbook that describes the circumstances of the catastrophe that drastically changed the Earth in 2026, and Kayoko ( Yasuko Matsuyuki and others have been wondering if there is a hint to return to the original era in the mysterious glowing stone brought back. Just then, Rena (Kotone Furukawa) and Akashi (Akito Miyazaki) find a riverside spot with warm water. However, this is a place where Car No. 6 claims territory and the members of Car No. 5 are not allowed to enter. Yuto and Sae (Moka Kamishiraishi) then head to Car 6 to negotiate, but Naoya (Yamada Yuki), who knows Sae's feelings for Yuto, interrupts them and offers to be the negotiator. Furthermore, Naoya, who does not believe that he can return to his previous era, says that he will move to car No. 6...

During the storm, a mysterious black distortion suddenly appeared inside the tunnel of Car 5! Is this a wormhole that connects to the original world? Should I jump in? Isn't there any danger? While Yuto (Eiji Akaso) and the others flinch, the distortion disappears. However, the group finds a glimmer of hope, and to make the distortion appear again, based on the research on time warp by physics professor Hasumi (Shotaro Mamiya), the group is led by Kato (Mi Inowaki) and goes back in time. In search of a clue to return to. However, Rena (Kotone Furukawa) and Koharu (Rin Kataoka), who is carrying a child in her womb, are reluctant to take the risk of returning to the past. Each passenger had mixed feelings. Meanwhile, Naoya (Yamada Yuki) is confused about his feelings for Sae (Kamishiraishi Moka). While Yuto is starting to realize this, Naoya makes an unexpected decision. And then the distortion appears again... Towards the shocking climax!

The passengers manage to make the wormhole appear again and return to the past. However, they arrived not in 2023, but in Tokyo in May 2026, about half a year before the global environment changed. Yuto, Sae, and the others are happy to reunite with their families, even though it has been three years since their original world. Everyone is thinking about the past in their own way. As Naoya enjoys the feeling of returning to his hometown, he also reunites with his younger brother Tatsuya. The passengers eventually return to their normal lives and complain about what they have seen in the future and what will soon happen on Earth. However, not only do the police and government not take their testimonies seriously, but Uemura and others act on their own, exposing the passengers to those around them. However, only Hasumi notices something when he holds the meteorite that Kato brought back from the future. At that time, a serious change occurs in Naoya's body.

The former passengers of Car No. 5 find themselves in a difficult situation after untrue facts are spread online. Naoya (Yamada Yuki), who suffers from unexplained tremors in his hands, and Yuto (Akaso Eiji), who is forced to take a leave of absence due to unreasonable slander, are also on the brink of despair to the point where they think, ``This world should just end.'' I was there. However, around that time, physics professor Hasumi (Shotaro Mamiya) seems to have discovered new facts about asteroid collisions that will drastically change the earth's environment. Meanwhile, Naoya is brought to a countermeasures meeting where the members of Car 5 gather. Also, there is Sae (Moka Kamishiraishi), who they meet for the first time in a while. The group decides to release a video at the suggestion of Yonezawa (Fujiwara Joichiro). Then, with that video as a trigger, things start to move in an unexpected direction.