United Nation Navy "Liberating The Oceans"

In the future nations of the world have decided to put their differences and work together under one banner of the "United Nations". Nations coming together, joining forces, sharing resources and technology for the prospect of a bright future. They decided to build a mighty ship that will be the sign of unity and strength of this alliance. But, an unknown forces suddenly shows up and a battle ensues that ended with the destruction of said ship. It's journey had just begun, read to see their journey in a new world.