At the beginning of time. There existed one being, the entity known as 10. 10 was the only thing in existence with unrivalled power. Being able to manipulate and conjure anything they pleased. After a while, 10 grew bored. This boredom spurred the idea of splitting itself into two beings. 1 and 0.
1 and 0 completely opposed each other. They would constantly fight over pretty much anything. Eventually, as a sign to prove themselves better than each other. They decided to spread their essence across the universe. The one that could contest and maintain as much space as possible would win and prove themselves superior. This resulted in the Big Bang.
1 creating the concept known as Matter and 0 creating the concept known as Antimatter. They created elements, stars, planets. Eventually, 1 won the battle. Contesting most of the universe with matter.