Three teenage boys thought they'd saved the world. So now it's time get back to the hard stuff, like being teenagers and discovering exactly what (human) girls were all about. Just as they are beginning to relax, they discover something more important, more deadly on the horizon. Their adventures have not ended. In fact they have only just begun. Not just unfriendly aliens out to get them this time, there is something worse; much worse, and it isn't in a very good mood.