Journey to the Center of the Earth, The Big Boom

The Hollow Earth Special Forces Team has run into a roadblock. The Big Boom has been triggered and is set to explode within twenty-four hours. Only the President of the United States knows the code to stop the countdown and he's missing in action.

Dirk and Aaron work frantically to try and figure out a way to stop the bomb from going off and destroying everything they've been trying to achieve, as well as the team
itself.

Meanwhile, a new team is assembling and their tale gets more complicated as they struggle to find meaning in the new age that has begun since the Big One that destroyed most of the major cities of the planet.