A world is nothing without sacrifice. Leaders sacrifice face and honor, people sacrifice money and power, and others sacrifice their lives to sustain the balance of their world. It takes only a moment of negligence to set an imbalance to a world, and sets a domino effect of perturbing consequences to lay destruction in its path.
It happens every year in Altair known as Amyths where the story of two lovers are commemorated for being reunited by a bridge across the milky way. However, every two years a single person goes missing, and every two years a new tale is spun.