Homeworld Strikes Back

In the near future, the earth has become desolate and dangerous. When a mysterious creature takes over the Earth, humanity is forced to take refuge in Sky Ark, a man-made city in the sky. As the population grows, space becomes increasingly scarce. Only the rich and powerful can stay in the Sky Ark, while the poor and orphans are exiled to the earth. Among them is a boy named Lagos, the son of a fallen former commander who is determined to save his fellow orphans and outcasts. In order to return to the Sky Ark and bring peace back to the world, he and his friends had to pass through the ruins of the old Earth and fight against groups of alien monsters.