"Moo! Moo!"
Mr. Mann heard his cows mooing in the field.
He ran outside and saw something flash across the sky.
It shot straight toward his farm.
"Oh no!" cried Mr. Mann.
"Yuck!" said Jack.
"We're having sloppy joes for lunch today."
It was Monday morning at Metro City Elementary School.
The students were on their way to class.
"Sloppy joes are the worst," said Mara.
"They're so gross and they drip everywhere."
"I wish Rocket Girl was here," said Terrell.
"She could save us from those sloppy joes."
"Yeah, Rocket Girl can do anything," said Jack.
"Rocket Girl is the number one superhero in Metro City," said Mara.
"She can fly, she's really strong, and she can shoot lasers out of her eyes.
She has lots of other super powers too!"
"Last week she stopped a big monster from stomping the school," said Terrell.
"Rocket Girl once saved Metro City from giant robots," said Mara.
"Remember when moon men were planning to blow up Earth?" asked Jack.
"Rocket Girl flew to the moon and destroyed their Earth Blaster!"
"You guys are always talking about Rocket Girl," Roxy said quietly.
"But she's not perfect.
She can't save us from sloppy joe day."
"Are you kidding?" asked Mara.
"I'll bet you're just jealous, Roxy," said Terrell.
"Jealous?" asked Roxy.
"Yes," said Terrell.
"You're jealous because you're never around when Rocket Girl shows up.
You probably wish you were Rocket Girl."
"Me? Rocket Girl?" Roxy laughed.
"That's a ridiculous idea!"
Just then Roxy's watch beeped.
It was only loud enough for Roxy to hear, and no one else.
"I'm tired of talking about Rocket Girl," Roxy told her friends.
"I'm going to see if Principal Penn needs help with anything."
Roxy walked down an empty hallway and made sure no one was around.
Then she pressed a button on her watch.
A small screen blinked on.
Mayor Bloom, the mayor of Metro City, appeared.
He didn't look happy.
"What's wrong, Mayor?" asked Roxy.
"A strange object landed at Mr. Mann's farm," said Mayor Bloom.
"We think it might be a spaceship."
"A spaceship? With aliens?" asked Roxy.
"We're not sure," said Mayor Bloom.
"But whatever it is, we need to find out.
I talked to Principal Penn.
She said you can leave school until we solve this case.
We're counting on you, Rocket Girl."
"I'm on my way," said Roxy.