A battle breaks out at school! During the commotion, Fumie steals a mysterious piece of data from Amasawa.

The Hackers' Club goes on a metabug expedition over the fringes of surrounding cyberspace lead by Isako.

Yasako and Fumie begin an investigation into Haraken and Searchmaton. Under pressure, Haraken reveals something huge to Yasako and Fumie.

Yasako finds a race of microscopic illegals growing on their faces that are on the brink of destruction. Can Yasako figure out a way to save them?

A docile illegal follows the kids on a hazardous journey through the city, driven to find more of its kind.

Yasako searches for the place she met 4423. Afterward, she deduces that the place was a virtual space that was deleted.

Haraken barely makes it back through Isako's gateway. Tamako, fearing for his life, takes his glasses away. Meanwhile, trouble begins as a space appears behind Megabaa's shop.

Haraken uses Kanna's glasses to sneak to the "other side." Yasako also enters with the help is Isako and Tamako.

Yasako and Isako are running from Megamass. While hiding, they discover that Densuke might be able to open a stable portal.

Desperate to save Isako, Yasako finds a pair of glasses that belonged to her grandfather and uses them to travel to the other side.

Yasako comes face to face with the true nature of the Coil Domain and Michiko. Even with the support of her friends, can she save Isako?