When the earth of Izmeran becomes diseased and no longer yields fruit and vegetables, its residents change their economy to one of crystal mines and jewelry. But then it becomes a paradise for thieves. Tanti is tasked with bringing back the special crystal mushroom, hidden in the "Heart of the Water," that will heal his country's earth.

When the earth of Izmeran becomes diseased and no longer yields fruit and vegetables, its residents change their economy to one of crystal mines and jewelry. But then it becomes a paradise for thieves. Tanti is tasked with bringing back the special crystal mushroom, hidden in the "Heart of the Water," that will heal his country's earth.

Yet just as the mushroom can heal, it can also arouse the dark urges in a person's soul. Tanti must therefore keep the purpose of his quest a secret, even at the risk of his life, so that the mushroom will not fall into the wrong hands. Tanti is accused of spying, is thrown into a prison tower, but then escapes. While a terrible war rages on, he continues his search for the mushroom.

Tanti must solve the riddle of the "Heart of the Water" in order to find the healing, yet lethal crystal mushroom. His journey is a daring and adventurous quest of discovery and growth as he uncovers courage, initiative, and love in unexpected places.