Because of an accident too absurd to get any more absurd,
nine people transmigrated at the same time.
But...
They didn't transmigrate into the same family.
They didn't even become themselves.
Instead:
Their souls randomly entered the bodies of people from ancient times.
And it got even more absurd:
Some men became women.
Some women became men.
One became their sworn enemy.
One became the emperor.
One became a eunuch.
One became a fiancée.
One became a widow who was already married.
One became a hostage from an enemy nation.
And one person...
became the "boss" of them all.