Chapter One: The Beginning

Once upon a time the Humans, Crystal Gems, and the Monsters all lived in peace. But the humans fears for the monsters started a war. Rose Quartz, the leader of the Crystal Gems didn't want this.

She didn't want anyone to get hurt. So she put up the barrier. She knew it was a bad idea to put the monsters underground. She thought that it was the only way to keep both monsters and humans safe.

After the humans calmed down and didn't fear the monsters anymore she would take down the barrier. But she could not take the barrier down because she gave up her physical form so Steven can be born.

Emerald never did like Rose's plan but she did not stop Rose from putting the barrier up because she also knew it was the only way to keep everyone safe. Emerald did not know how to take down the barrier when Steven was born. But she had made promise to herself that she would find away to free the monsters.

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It was a nice day outside today. Well other then the Crystal Gems fighting a gem mutant. Anyway my name is Steven, Steven Universe. I'm a gem too, well half gem. My mom was a gem and my dad is human. If you want to know what happen to my mom well its long story that I don't have time to tell. The gems are my family too. They knew my mom for a long time.

I still don't know how to feel about my mom. There are somethings that the gems won't tell me. Even though I could handle it. A lot of stuff has happen but I have made some friends from Home World, Peridot and lapis.

They use to be our enemy's but then they came around. I am happy to be their friend. They are here to, but are not fighting. Then all of sudden I heard a loud noise. The Crystal Gems smashed the gem mutant in the ground and it poofed back into its gem.

There was a big crack in the ground right where I was standing. "Steven"! I heard Emerald yell as she grabbed my hand. I heard another crack and then we were felling. "ahhhh"! That's all I could do was scream. Emerald hugged me close and then everything want black. The last thing I heard was everyone yelling our name.

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The Crystal Gems all just stood there. Everything was quiet. No one said anything. In till... "Steven"! "Oh no what are we going to do". "What are we going to do".

"Pearl calm down" Garnet said.

"How can I calm down Steven Just fell underground". "He could be hurt and not only that Emerald fell too" Pearl yelled as she held on to Amethyst for dear life.

"Pearl get off of me" Amethyst said as she pushed Pearl off of her. Pearl started to run around yelling about Steven, being hurt, and what are we going to do. Amethyst was running after her trying to calm her down while Garnet was looking at were Steven and Emerald fell, thinking.

Peridot was also looking there to with sad look on her face. "Lazuli, what are we going to do" she said as she looked up to lapis to see what she would say. Lapis looked down to Peridot also with a sad look on her face. "I don't know Peri". "I don't know".

Garnet looked up and saw that Amethyst had jumped on Pearl and now they were on the ground rolling around in the dirt. "Alright that's enough you too" Garnet said. They got up but now Pearl was glaring at Amethyst. While Amethyst just smirked at her. Garnet smiled "Okay everyone I have a plan". "Really what is it" Pearl and Peridot asked at the same time. "Well they broke through the barrier".

"Oh that means-". Pearl got cut off by Garnet. "Their in the Underground".

"Wait we know their underground we saw them fall" Peridot said in confusion.

"Their with the monsters p-dot" Amethyst said.

"Monsters? What are those" Lapis asked.

"Its long story we'll tell you later" Pearl told them.

"We have to get home now". "lets go guys" Garnet said.

Amethyst and a calm Pearl walked after her. Peridot and Lapis looked at each other then followed after the others

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A/N: Hey everyone its Jenna. Anyway this is my take on a crossover for Steven Universe and Undertale with my OC in it. I am only doing a pacifist route. Thank you all for reading.