At the end of the century, resources were scarce, the economy had collapsed, and nations were on the brink of war. World war was about to break out when everything changed without warning.
All kinds of vortex-like gates, large and small, suddenly appeared around the world. After a few brave souls explored them, they discovered that the gates led to different otherworlds. At the same time, many people began awakening to all sorts of abilities. Some could breathe fire, some could fly, and others could shoot lasers from their eyes.
Those who could obtain wondrous items and abilities became the main force exploring the otherworlds, and the balance of power in the world changed as a result.