The essence is simple, in all mythologies, all religions how many to find
And at the core of any story there's one and the same motif:
Someone hears a distant voice, he leaves home alone.
He walks the road from the city into a dark forest, full of cobwebs.

On the way he meets monsters, fights them just as alone.
He's not a hero yet, he fears everything, but he still keeps going.
And at the end — he comes to the lair, it'll be hard, but he'll win.
And having killed the dragon, he'll return home, but no longer the one who left.