| ShortSummary
| - (Opening narration: According to my old memories, the body I was given was an empty shell, without life.)
- Yasako and Isako, on the run from Megamass and a powerful new searchmaton, take refuge in Megabaa's store. There, it is discovered that Densuke has the potential to open a stable portal to "the other side", now known as "Coil Domain". It is revealed that Coil Domain, Michiko, Imago and Kirabugs are remnants of an experiment gone awry, covered up by the Megamass conglomerate.
- The protagonists agree to aid Denpa in relocating a docile plesiosaur-type illegal, which he had previously been raising in an obsolete space now scheduled for reconstruction. The lonesome illegal, driven to find more of its kind, follows the children in a hazardous journey through the city.
- As First and Third elementary merge for classes on the top floor of a Megamass office building, Isako finds herself involved in a conspiracy by Megamass to research obsolete space and the effects of Dennō Coil.
- (Opening narration: According to industry rumors, there are some hidden functions in the glasses that are better left unmentioned.)
- Using the glasses that belonged to her deceased grandfather, Yasako travels to the other side to save Isako. Meanwhile, Megabaa finds out that they were mistaken on who 4423 really is.
- (Opening narration: According to rumors among children on the other side of the station, it appears that in the deepest part of old space lives a dangerous illegal.)
- Nekome, driven to reveal true nature and history of the "dennō" technology, tries to convince Isako to join her brother in Coil Domain using Densuke as a portal.
- Having captured Densuke, the Mojos deliver him to Isako. After separating the illegal from Densuke, Isako unsuccessfully attempts to "unlock" the organism with her key, causing nearby cyberspace to rupture. She reports the episode to a mysterious conspirator over the phone.
- The kids spend a dark and stormy night at school telling ghost stories and playing spooky dennō games. Isako uses the distraction to capture a kirabug manifested in the form of Michiko inside the school. Meanwhile, Haraken is briefly whisked away to "the other side".
- (Opening narration: According to rumors, if you think constantly about the person you want to meet, you'll suddenly end up seeing them.)
- Haraken, Fumie, and Yasako follow clues left by Haraken's former research partner, Kanna Ashihara. Meanwhile, Daichi is ejected from Isako's group due to his failure to defeat Fumie in a duel.
- Yasako and Fumie ask Yasako's grandmother, Megabaa, to cure Densuke of a deadly illness. In return Yasako agrees to join Megabaa's Detective Agency as their eighth member. Meanwhile Isako relentlessly searches for the "Keyhole". Deducing that it resides as an illegal in Densuke, she unleashes her virtual pets to capture him.
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