Mega Man Star Force

Geo Stelar is having a hard time adjusting to life after his father vanished in a space station accident three months ago, and it does not help when a group of children from his class try to forcefully make him attend school again. However, Geo's life takes a startling turn when he witnesses a battle between two EM waves one night, one of which collides with him in a flashy beam of light.

Geo Stelar is having a hard time adjusting to life after his father vanished in a space station accident three months ago, and it does not help when a group of children from his class try to forcefully make him attend school again. However, Geo's life takes a startling turn when he witnesses a battle between two EM waves one night, one of which collides with him in a flashy beam of light.

Geo meets Omega-Xis, an alien from the planet FM, who hides out from his enemies in Geo's Transer. One day, a group of EM viruses attack a monorail train with Luna aboard. In order to battle the EM viruses, Omega-Xis offers Geo his power, and merging, they transform into the EM Wave Human known as Mega Man. With his new powers, Geo defeats the virus invasion, rescues Luna, and makes a name for himself as a hero in Echo Ridge.

A new breed of radio wave viruses have substantiated at a museum, so Geo investigates. While there, he notices a strange aura emitting from a display item called the "Sword of Zerker." Soon after, two new enemies appear (Yeti Blizzard and Dark Phantom) and begin to battle one another for the sword. In the heat of the struggle to protect the sword, Omega-Xis accidentally ingests it, and the enemies flee.

After discussing the incident with Sonia, Geo meets a professor named Vega. She explains that Cepheus's activity on Earth recently awakened the EM wave residents (UMAs) of the lost continent Mu. Mu was sealed with an extremely powerful EM wave being within it, and the UMAs wish to break the seal in order to release the being. But to do so, they require three OOParts—one of which is the Sword of Zerker stuck in Omega-Xis's stomach—and Vega hopes to cooperate with Geo in order to retrieve the OOParts first. Suddenly however, a mysterious new enemy named Rogue attacks the university and assaults Geo...

Mega Man and Rogue (who is after the Sword of Zerker) battle, but Rogue is eventually forced to retreat after Vega intervenes with a large jamming beam that disrupts EM wave activity. Later, Geo takes Omega-Xis to AMAKEN to have the sword extracted from his stomach, and in the meantime, he and his friends play a materialization hammer game using the Star Carriers.