u/Riley_KG

I have this amazing idea of a story. (like everyone else has) I know my MC, I know what the end goal should be, I know the setting, the world.
But what about the massive middle?
How do you guys fill it up?
LIke after the first chapter introduces us to the MC and the world around them, how does one figure out which direction to lead the story to? Basically what i have is a situation that I'm trying to turn into story.