Episodes

Geo seeks a possible OOPart within a ninja academy, but in order to enter, he must enroll in ninja training. He's accompanied by his friends Luna, Bud, Zack, Sonia, and Cancer Bubble. Their trainer puts them through a variety of rigorous tests, and upon completing them, Geo discovers that both Hyde and Rich are also enrolling in the school.

After a hard night of training, Rich and Hyde sneak off into the ninja mansion in search of the OOPart. Geo also sneaks off to try to find it. Along the way, Rich and Hyde encounter the ninja instructor and transform to battle with him. Geo also transforms and discovers the OOPart, only to be attacked suddenly by Rogue. When Yeti Blizzard and Mega Man bring their OOParts close to the one in the mansion, a portal to Mu opens, and Rogue escapes into it. As it closes, Yeti Blizzard and Dark Phantom escape, the latter taking the OOPart (The Star of Ninja) with him.

Yeti Blizzard and Dark Phantom team up to take on Mega Man, but Dark Phantom retreats amidst the battle. Later, Geo is approached by Rich Dotcom, offering Geo a large sum of money in exchange for the Sword of Zerker inside Omega-Xis. Geo refuses and the two of them begin to battle on the rooftops. Meanwhile, Hyde begins hosting painting lessons to elementary school children including Geo's friends Luna, Bud, and Zack.

Yeti Blizzard and Mega Man continue to battle. However, their fight over the OOParts attracts EM wave viruses which begin to rampage through the city, much to the Satella Police's dismay. Meanwhile, Hyde continues his painting lessons and eavesdrops on Luna's conversation to discover Mega Man's identity. When he discovers that Geo's mother is attending the lessons, he threatens Mega Man to hand over his OOPart in exchange for his mother's safety.

After ditching Yeti Blizzard, who refused to let go of Mega Man, he rushes off to save Hope, but fails to stop Dark Phantom from escaping with his mother. Joined by Lyra Note, the two pursue the UMA across the city, but cannot attack because Dark Phantom uses Hope as a shield. After cruelly taunting Geo with his mother's life, Dark Phantom scores a decisive victory against him and Lyra Note, but before he can finish them off a revived Yeti Blizzard intervenes. The two decide to rush the greatly weakened Mega Man, but he is saved by an unlikely savior: Hollow.

Vega arrives and orders Hollow to retrieve the two OOParts. Yeti Blizzard and Dark Phantom are no match for Hollow's speed and electric attacks, and are swiftly defeated and stripped of their OOParts, leaving them in their human forms. With two of the three OOParts in her possession, Vega's demeanor changes, and she reveals to Geo her plan to use the three OOParts to revive the being Le Mu in order to create a new world. Geo resolves to stop her, and activates Thunder Zerker in order to battle Hollow.

Hollow quickly proves to be Geo's toughest opponent yet. His attacks are blinding fast and no matter how many times Geo lands a blow, Hollow shows no signs of damage. Aaron and the Satella Police soon arrive on scene, and Aaron and Tom locate the source of Hollow's unstoppable power, a device located within Vega's car. After Copper destroys it with his signal jammer, Geo finally manages to harm Hollow, but Vega uses the two OOParts in her possession to heal him. With the three artifacts in such close proximity, a portal to Mu appears in the sky.

Mega Man is pulled into the portal to Mu, and is followed by Hollow, Lyra Note, as well as Yeti Blizzard and Dark Phantom, Vega, and Copper. Hollow finally overwhelms Geo and pulls the Sword of Zerker out of Omega-Xis and presents it to Vega, who has by now convinced Dark Phantom and Yeti Blizzard to help her in exchange for immortality. Geo is joined by Sonia and the two discover and awaken a comatose Solo (Rogue's human identity), who weakly explains how he is the last inhabitant of Mu and protects the seal on Le Mu. Though greatly weakened, he transforms into his wave form and goes off to confront Vega.

Vega revives Le Mu using the OOParts while Lyra Note confronts Dark Phantom and Yeti Blizzard. Rogue takes on Hollow and holds him off for a while. Geo sees that Omega-Xis is being smothered in a pool of dangerous substance. He then jumps down to save him and rises back up in his EM form. Copper shouts out to Mega Man to grab the OOParts before Le Mu comes to life. He grabs them all and Mega Man transforms into the ultimate amalgamation of all three OOParts: Tribe King. Using this new power, Mega Man destroys Hollow, but Vega escapes arrest. As everyone escapes Mu, Rogue appears and uses what's left of his energy, with the help of Tribe King Mega Man, to seal Le Mu and close the portal to Mu with Vega still inside. With disaster averted, life goes back to normal for Geo and his friends.