Once upon a time, there lived a great big fluffy cloud named Cumulus.

Hi there! I'm Cumulus.

Cumulus was a fun-loving cloud. He loved to play with his best friends, Stratus and Cirrus (who were twin brothers). But most of all, Cumulus loved to go on adventures, especially by himself.

Huh. That was weird. I can feel air, but I can't see anything! I wonder what it is.

One day, Cumulus was playing with Stratus and Cirrus, when he suddenly felt a huge bunch of air blowing at him. Cumulus was very confused, because he couldn't see anything, but he could feel it.

Cumulus thought it was nothing. But while he was on his way back home, Cumulus felt another big blast of air, and this one almost blew him away!

Woah!  That was a close one! I almost flew away!

Cumulus was determined to find out was was causing these blasts of air. So he decided to go and visit the wisest scientist in all of Cloud Town. Everybody called this scientist Sir Astrostratus.

While Cumulus was on his way to Sir Astrostratus's office, he spotted a strange face just floating in the air. Cumulus was very confused. Suddenly, the floating face began to talk, and Cumulus jumped back in fear.

Hello there!

"Don't be scared! I'm harmless!" the floating face said. "What's your name?" Cumulus asked, still shaken. "My name's Windsora! You can't see me, because I'm made of air! Humans call me wind. My job is to blow air!" the face replied.

I'm Windsora! You must be from Cloud Town!

"Wind?" Cumulus asked, confused. "Yes! Have you heard of the Sun before?" Windsora asked. "No, I haven't. What's that?" Cumulus said. "Well then, we're just getting started! Follow me, Cumulus," Windsora laughed. "How'd you know my name?" Cumulus questioned. "Well, you're a big fluffy cloud, so I simply guessed!" Windsora explained. Wow, Cumulus thought, she's really smart!

"Follow me, Cumulus! I'll take you to see Sunny and Raina, the weather twins!" Windsora exclaimed. "Alright, then," Cumulus said, a bit of hesitation crossing him. Seeing this, Windsora laughed. "Don't worry, they're harmless!" she said. 

"Sunny! Raina! We've got another cloud guest!" Windsora yelled out once they arrived. "Welcome!" Raina said. "You can't see me all that well, but I'm still here!" "Hey! I'm going to guess your name is Cumulus! I'm Sunny!" Sunny said. "Let's go through the regular process," Windsora said.

"Okay! Cumulus, follow Sunny, Windsora, and me! We're going to teach you all about us, including you, and how we all work together to keep our Earth and people happy!" Raina exclaimed. "Okay! I'm excited!" Cumulus said cheerfully.