The Galactic Alliance has one goal and that is to stop the Vorx.

There are tons of worlds and areas that you need to clear in order to stop the Vorx. Clearing these worlds is your main goal, once you've cleared one you need to move on to the next. You can view the worlds from the main menu by tapping the button in the centre of the screen, just below your hero.

So what are you waiting for? Stop the Vorx Coalition before it's too late.