Macbeth and banquo lands on a random planet and happens to land on the alien king killing him making Macbeth the new king of the planet.
The Aliens tell Macbeth his friend will take his rights as king away and Macbeth questions what he should do.
Fearing his position as king, just from the words of the witches Macbeth shoots his only friend on this forsaken planet.
After Macbeth kills banqou, he sarts o feel guilty so bad that he sees banquos ghost and drives him insane.
He goes to the witches to reassure himself to be told that hey can only be killed by someone not from this planet and he was happy because he was the only one left that wasn't from this planet.
Macbeth grew so cocky that nothing scared him but a giant alien came to take the crown but what macbeth didnt know what that this alien was the ruler of thousands of other planets the he conqourd, so this means hes not from this planet, Leading to his death.