Earth Destruction
ProtoMan arrives to help ward off Bass, but more giant-sized viruses continue appearing in the real world. Lan and Chaud prepare to send their NetNavis to the comet, but Bass intervenes in hopes of overcoming the power that threatens Earth himself. Bass meets Slur who swiftly defeats him. Slur is a subordinate of Duo, an intergalactic force threatening to erase Earth after Dr. Regal's activity with darkness. However, Lan and Chaud convince him to spare their planet, and Duo challenges them to prove humankind's worth. After the incident, Lan receives a marking on the palm of his hand, the Crest of Duo.
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Episode 1
Duo
The NetSavers are in investigation with the Sci-Lab over the strange comet that has appeared in Earth's atmosphere. Soon, strange activity begins occurring when giant-sized Mettaur viruses begin terrorizing DenTech City. Lan and Chaud manage to defeat them, but MegaMan finds himself captured by none-other-than Bass. He tells MegaMan that he is after his "Ultimate Program" so he can fight off Duo. As Lan and Chaud rush to his rescue, they encounter an old rival, Dr. Wily, who seems to know what's going on.
Episode 3
Threat of Asteroid
BlazeQuest releases new PET models called Progress PETs. Meanwhile, while shooting a commercial for BlazeQuest, Lan meets Inukai, a zookeeper who is abusive to the animals. When Inukai gets in trouble, his frustration attracts Slur, and he is given Asteroid SavageMan to get revenge. Asteroid NetNavis are able to appear in the real world without Dimensional Areas, causing problems with Lan and Chaud, but Dr. Wily helps in the production of a Dimensional Area Generator, allowing the Sci-Labs to create them on command.
Episode 4
Salad Memorial Day!?
Mameo, a boy attending Lan's school, hates vegetables. Slur targets him and gives him Asteroid VineMan who can help destroy all of the vegetables in the world. This enrages Lan since vegetables are a prominent ingredient in curry, so Lan and Chaud track Mameo down. However, VineMan turns on Mameo, so Lan and Chaud must rescue him from his own NetNavi.
Episode 5
Flying the Skies, Flirty Rascal!
While investigating a NetSaver case, Lan notices helicopter pilot Charlie Airstar at the scene of the crimes. Lan presumes Charlie is the culprit, but Charlie is really tracking the true criminal on his own: director of DNN network, Sunayama (and even has the nerve of pursuing Sunayama to Lan's school). Sunayama uses Asteroid DesertMan to fight back, but MegaMan and ProtoMan team up with Charlie's GyroMan to stop him.
Episode 6
Stone Panic!
Clumsy Yui receives Asteroid StoneMan who gives her the power to turn anything she touches into stone. Panicking, Yui soon transforms the entire business complex and everyone inside into statues. Lan, who is returning an item Yui lost, encounters the problem and battles with StoneMan through Cross Fusion, as Yui had panicked and slotted the Dimensional Chip in.
Episode 7
Navi Car Race!
Lan and Chaud represent BlazeQuest in a car race where NetNavis operate racecars in the real world and get into some comical arguments in the progress. Another participant, Rei Saiko, has mysteriously moved up in the tournament thanks to Rei's new NetNavi, Asteroid FlashMan, who has been cheating in the races. MegaMan and ProtoMan catch FlashMan in the act and are forced to battle with him by Cross Fusing, but Rei escapes before he can be arrested.
