In an ancient world forgotten by time, enormous titans terrorize the land. Five tribes have been fleeing from the titans for centuries, but things are about to change. Growing city-states pledge to end the reign of terror, determined to take on the titans and make the world a safer place for all. Each city-state competes to attract the tribes, eager for the strength of the combined peoples, who are now leaving behind old traditions with the hope that the titans can be defeated once and for all.