A World of Their Own Prologue

In our world (2109) the end will come. The end of the world. Natural disasters and horrible accidents are destroying the planet. Scientists and the government are providing the construction of very very many space shuttles to evacuate the planet in grave danger. The shuttles can only have up to 30 people maximum, so only half the humans can leave from earth. A shuttle, which mostly has teenagers, takes a different route from the other shuttles. They're frightened at first, but when they see that all the other shuttles are destroyed, they become terrified. Are they the only humans alive in the galaxy? What will happen to the Earth? Will the last humans starve? What has everything come to? Find out...