A Layman's Theories On The Human Story

Long ago, an advanced civilization visited the earth, probably colonists. Left on this planet either by choice or by accident, they began erecting a home base. They build a great city and soon settle into their new environment. Things are going well for the colonists. The colony is well
 organized and led by an experienced and inspiring leader. In their leisure time from work, the colonists occasionally partake in social companionship, entertainment and intoxicating celebration. One day they begin to notice a falloff in female pregnancies among them. Despite increased marriages, the population is not growing. This has dire implications on colony survival. These people live for many thousands of years. The anticipation was that they would be on this planet for a very long time, and by natural means, the colony would grow in numbers. The medical team discloses to the leadership assembly that the drop in pregnancies is expected to continue, and eventually dry out. Once informed of this malady, panic begins to take hold of the colony. The public is beginning to question authority, and implications become centered on the colony's leadership. Division splits the colony, and some are beginning to fall under the influence of another one among them. The cast has been set, and this challenger begins to slowly build support.