As birthrates continue to fall, the survival of Diablo Keep is dependent on its herd of Tyrannobos - fire-breathing, two-and-a-half story tall, omnivorous long-horned cattle.

As the fires of civil war are extinguished, the Guilds of Carcanas are left to question who was pulling the strings, and who among them had been feeding information to Celestial Rim. Zed Fifer has some answers, but they force Crios to question everything he knew about his past. With these deeper secrets of his father's work looming over him, the time has come for Crios to confront Axis. But in order to do so, he's going to need help from his friends in Dragon's Den and beyond. Time waits for no one, and by the end of it, Crios will come to understand what is at stake runs deeper than just Carcanas' independence from Axis' rule.

With his weapon left in shambles, Crios found himself in need of a new design, and a desperate desire to grow stronger. Given a chance to be trained by a Top-Ranked Guildie, Crios left Sassoon, unaware of the wild adventure he was about to face. For those of Dragon's Den he left behind, they would find their skills and newfound fame put to the test. The machinations of Celestial Rim will be set in motion, throwing the whole of Carcanas into chaos, and bringing to light exactly what it means to have the power of a dragon.

After a nuclear disaster, the people of Diablo Keep, located in California's San Gabriel Mountains, work to survive long enough to eventually build a bridge to the stars and escape a dying Earth.

Patrick Henry, the world's greatest information baron, is coming top Diablo Keep to begin resurrecting the World Wide Web.

The people of Diablo Keep prepare for a visit from the Governor of New California and Rich Ransdell.

Crios is a not-so-ordinary employee in his uncle's ordinary repair shop. When one day a couple of guild members show up, word gets out about his amazing skills. In no time the shut in Crios makes friends and heads out into the world, trying to prove how extraordinary he really is. Although soon he finds out that he is who he is for a reason, and he's part of a much greater plot all revolving around him and his guild, Dragon's Den.