The GEATHJERK invasion had been repelled yet again, but, naturally, they attack Earth again shortly after.
However, after the initial second attack, they decide to bug out and leave completely.

No one is more curious about why they left so abruptly as the secret team of heroes known as the Wonderful 101, who were the ones that knocked them back in the first place. While searching for possible reasons they left, they come across an oddity: an Earth-like planet not too far away. Hoping to secure an ally in the war against GEATHJERK, a group of Wonderful Ones is sent to this new planet.

This is the story of what happened.

Takes place after the events of the game, and as such contains spoilers
A collaboration between myself and xl9.