General Schwarz approaches the ToQgers so they can join forces to defeat Emperor Z.

While trying to battle Billiard Shadow, Mio is accosted by a man who has fallen in love with her. To avoid the man's affections, Mio says that Akira is her boyfriend, but this does not go down well with Tokatti.

Akira, as Zaram, joins General Schwarz in his assault on Castle Terminal, but someone else gets the AppliChanger and attacks the ToQgers as ToQ 6gou.

Subarugahama is discovered to be kept under the Castle Terminal, leading the ToQgers to attempt an assault on the castle in order to free their hometown.

Right wants to make an assault on Castle Terminal to free Subarugahama, but Akira and Mio realize that he is being too headstrong. Wagon reveals that she can deliver a letter for them, but it must contain their true feelings of things and Tokatti is not ready to commit to that.

When Dollhouse Shadow attacks the ToQgers, Hikari and Kagura are trapped inside its dollhouse which will burn and kill them if they cannot find a way out or if the others cannot stop it.

Miss Gritta helps the ToQgers reach Castle Terminal to save their hometown, but Emperor Z still stands in their way.

In the next Shadow Town, the ToQgers come across various fictional characters, with Tokatti's favorite childhood superhero Ryo Knight appearing before him to encourage him, but all is not as it seems.

While stopping at the next station, Right, Tokatti, Mio, and Kagura are all arrested for a crime they did not commit, because the cop who arrested them is incompetent. Hikari must now try to discover the true culprit and free his friends.

At the next stop, the ToQgers are perplexed to find Kuros but no Shadow Kaijin. However, Kagura and Akira discover that something odd is happening at the local public bath.

The Ressha stops at a station under the power of Film Shadow, leading the ToQgers to help produce a rival movie to defeat the monster.

Jack-in-the-Box Shadow's ability to send people flying away from him if they laugh affects all the ToQgers except Akira, leading the others to help Akira find his sense of humor or else he may be killed.

After it is revealed that Mio has the weakest Imagination of the group, they try to teach her how to improve her Imagination. However, the appearance of Hammer Shadow and the strange creature Mikey complicate plans.

Kagura regains a memory that it is Mio's birthday today and plans to bake her a cake and throw her a surprise party, but while she is baking the other ToQgers are attacked by Wig Shadow whose wigs will kill them once a bird hatches from a nest on the top of their heads.

After getting too emotionally involved in a ninja movie, Kagura accidentally breaks Hikari's kendama toy, and thinks that he won't forgive her. However, the Ressha stops at a new Dark Station where Hanko Shadow has made everyone lose their motivation, and Right, Tokatti, and Mio fall under his spell.

Soap Shadow's ability to switch people's minds and bodies switches Gritta and Mio just as Gritta is to be married to Emperor Z.

Hikari finds their old homeroom teacher is still alive, as she had left town to go to university, and he leads the others in protecting her from Fountain Pen Shadow's failure attack so she could tell them the location of Subarugahama.

While the Ressha are under maintenance from the previous battle, the group uses the Support Ressha. At the next stop, Right wants to try a new buffet, but Mio meets someone apparently from her past who was in love with her.

Right managed to find one of the missing Support Ressha while out in the woods, so he and Tokatti go out to find it. However, General Schwarz has been spying on the ToQgers and heads out to capture the Support Ressha for the Shadow Line.

After Tokatti meets a young man named Hiroki Fujisawa who seems to be unable to see the Ressha, Type Shadow sentences Tokatti to die at sunset.

The signal from the lost Diesel Ressha is found, but because it is so weak there might be a chance it cannot work again. Right is sent out to find it, as his strong Imagination can restore it. They learned that the previous enemy they encountered placed a bomb on Tokatti that is strong enough to destroy the Resshas, when the Ressha's brakes are discovered to be broken, everyone fears that the Shadow Line has planted a bomb on them.

A series of attacks from Kuliner Robos leaves the main Ressha in dire need of repairs, once again leaving the Support Ressha and Diesel-Oh all that the ToQgers can use. The Conductor warns them that they must find other Support Ressha in order to bolster the powers of Cho ToQ-Oh. While Right and Mio are out searching, Loupe Shadow appears, and throws Mio into a powerful rage.

Madame Noir uses her powers to turn Right against the other ToQgers, with Tokatti leading the group to get their friend back.

In the next Shadow Town, Keeper Knight forces the ToQgers to take a quiz, leaving Tokatti unsure of how he should answer due to being asked about Mio.

The other ToQgers can no longer see the Ressha and are seemingly devoid of their Imagination. Right tries to get through to them, but Lamp Shadow reveals to him that Z has hypnotized all of them to forget their time on the Rainbow Line. Right must figure out how to get them back to normal, while also dealing with new memories of their childhood home.