Infiltrate

"What are you looking at?" A man with grey hair asked a girl around the age of 18,

The room was dark, 

She was drawing something on a  drafting table, the only light source being the lamp directly above the table,

"Just some stuff I need to work on for the train today,"

"See? It can travel between worlds!"

She pointed at the blueprints to the machine, but the man stared at them with a look of confusion, 

Soon he let out a sigh and gave up trying to understand,

"You still believe there are other worlds out there, huh?"

"Yup! And I'm gonna find them, I just need the materials, and we'll be saved!" She grinned.

"You're an ambitious one, hahaha." 

"I'm serious about this, just wait, I'll create a train to go between worlds, and it will help our dying planet,"  She turned back to her drafting table and started to draw once more,