Mongolia is one of the ten most resource-rich countries in the world. Unbelievable riches are stored in the ground: coal, copper, zinc, rare earths and also gold. A lot of gold! The largest deposit in Mongolia was once explored by GDR geologists – and discovered a deposit of more than 40 tons of gold. But not a single gram of it has ever arrived in Germany. The film accompanies the geologist Frieder Hacker from Freiberg and his Mongolian wife Solongo. On the trail of this secret expedition, the two travel to Mongolia once again.