Okay kiddo, let me tell you a story about the people who lived long ago in a place called Mesoamerica. They had many gods and goddesses that they believed controlled everything, like the sun and rain. They also had stories about how the world was created and how humans were made.
One of the most important gods was Quetzalcoatl, who was a feathered serpent. The people believed he brought knowledge and civilization to them. Another important god was Tlaloc, who controlled the rain and was worshipped for good harvests. Huitzilopochtli was the god of war and the sun, which they believed would die every night and needed to be brought back to life by sacrifices.
The people also believed in an underworld ruled by Mictlantecuhtli and Mictecacihuatl, who controlled the dead. They believed if someone died bravely in battle, they would go to a place called the Sun's House, where they would live forever.
The stories also included heroes like the twins Hunahpu and Xbalanque who defeated the lords of the underworld in a ball game. There was also a story about the feathered serpent Quetzalcoatl, who was so sad after a loss that he left the city promising to return one day.
So remember, Mesoamerican mythology is a collection of stories about gods and heroes that the ancient people of Mesoamerica believed controlled the world.