The peace of the Guardian Planet, Tymorea, is in deadly peril. War there will create ripples of unrest and destruction throughout the settled universe. Tymos and Kryslie, still adolescents, have barely mastered their power and Llaimos is still less than a year old, but they are the three chosen to be Advocates of the mystical Guardians of Peace, to safeguard the Tymorean Trust. The Aeronites, already infiltrating Tymorea, will soon we ready to declare open warfare and begin reforming the planet's surface. With the Tymorean population withdrawing to protected places, Tymos and Kryslie are the only ones able to win back the loyalty of the hostile mutant tribes and deny the aliens their help. Only they can bring the wild creatures to the protected forests, accelerate the harvests and protect the wide-open growing areas. Through this, they must ensure the safety of Llaimos as he grows, and evade the warrior assassins sent to neutralise them. After the Aeronites attack, they have only an illusion of victory when a second, even deadlier enemy reveal themselves. The Ciriot, a race of pirates and torturers, used the Aeronites to get to the treasures and knowledge of the legendary Guardian Planet. The Guardian's Advocates must learn to wield the power of their whole planet, to fight them, to return peace to Tymorea, and to reverse lethal damage done to their world.