Three years ago, Serizawa was troubled with about his psychic powers. One day, he was visited by the boss, Suzuki Toichiro. Serizawa ends up trusting him since he's the first person to understand what he's going through. But Mob then brings up the fact that Serizawa is being used and tells him, "I'll be your friend." Hearing Mob say that, Serizawa... Meanwhile, after defeating Sho, the boss starts gathering up the energy he was sharing with his followers and turns into an energy monster.

Sho finally arrived at Seasoning Cultural Tower and was greeted by Shimazaki, one of the Ultimate 5. Ritsu faces off with Shimazaki and urges Sho to go ahead. However, Shimazaki is able to teleport and he gets ahead of him. Meanwhile, Mob has woken up and is heading to the tower and is also approached by one of the Ultimate 5, Minegishi. Mob has a difficult time dealing with Minegishi, who controls plants, but then someone rather unexpected comes to his aid.

The boss of the Claw, Suzuki Toichiro barricades himself into Seasoning City Culture Tower after declaring war on the world. After instantly getting rid of the police barriers, they make their next move. Meanwhile, back at the hideout, Reigen and the others were making their move, as well. The former members of the 7th Division and the Awakening Lab head to the tower under Reigen's instruction. Sho and Ritsu also make their move to stop Suzuki's plans.

Reigen received a phone call at his office, the Spirits and Such Consultation Office. The client asked him to find out what the black shadow that kept destroying his fields actually was. Meanwhile, back at Salt Middle School, Kamuro announces that he's going to resign from the position of student council president. Elections to decide a new student council president are going to be held and Mezato convinces Mob to run as a candidate, but...

The ritual is completed, but Yu-No must pay a heavy price. Will Takuya be there for her?

After safely qualifying to become adventurers Taichi and Rin begin working out of the inn, Mithril, completing the easiest E-Rank quests. Then one day the guild makes its decision to directly entrust them with a difficult quest, holding high hopes for their abilities. The quest is one that D-Rank adventurers have already failed twice - the investigation of a smuggling operation in the slums.

It's a grand rally for all the Appmon who've appeared so far! The Appmon ranking tournament begins, featuring... a 100 meter dash, karuta, and a portrait competition?! Who will be declared the ultimate Appmon?!

A powerful rival to Astora appears! Astora's own funny videos start getting lots of dislikes... which leads to a fight with Musimon?!

Asuka Torajiro, AKA Astora, is a popular AppTuber on a video streaming site. But is that... an App Drive appearing in one of his funny videos? Could he be an App Driver too?!

Eri gets a gig as a restaurant reviewer, but it turns out she's not very good at it! For advice, she seeks out a mysterious figure behind a popular food review app, but...

It's finally time for the showdown with Leviathan, and to show him Haru and Gatchmon's buddy power! The App Drivers will all stand up to ensure humanity's future!

More and more people are bathed in Leviathan's light, and turned into apps. Leviathan has also consumed the God Appmon to install them into himself. Can he be stopped?!

A massive shadow appears in the skies and throws the city into chaos! Who would have thought Leviathan would apprealize, too? Haru gets the Gaiamon chip, but can he bring back his best friend Yujin?

Haru assumed he had the only App Drive in the world, but then he sees one fall out of newcomer idol Karan Eri's bag! They go to the TV studio to find out the truth, but security is strict! What's the plan, Haru?!

Leviathan initiates Operation: Human Applications, and little by little, the people of the world are converted into apps. Eri, Astora, and Rei apprealize their God Appmon to try to defeat Deusmon!

Just as things seemed to be working out, Yujin revealed his terrible secret: he was a Leviathan-created AI all along! Bootmon is evolved into a more advanced form, and the God-grades are released...