Chapter 1:
The people of Aranearum were finally having a peaceful life, but then they heard something. You see, thanks to Choo-Choo Charles, the sound of a train whistle scares them.
"Relax," says Paul, "it's just a regular... no, it can't be!"
It seems Choo-Choo Charles has come back and now everyone's scared again.
...
"For years, they have laughed at Dr. Virus, well, now, with my new Mecha-Charles, who's laughing now?" Dr. Virus then laughs.
...
The people were scared, not realizing that what they're dealing with is merely a robot made from Charles' remains, but still, who will save them now?
To Be Continued
This is Non-cannon to the Ultimate Advanceverse. This is a sequel to Rainbow Friends × All Grown Up!