In the cities of Piltover and Zaun, tensions rise as inventors, hooligans, politicians, and crime lords grow increasingly dissatisfied with the constraints of a devastated society. With the situation on the verge of being unsustainable, two sisters steal an artifact of immeasurable power. Discovery and danger collide as heroes are born and bonds are broken. Will this power change the world? Or will it lead to ruin? This is the world of Arcane.