The manuscript of the legendary Lonely Man of the Mountains - the famous hermit sage of Ancient China - was accidentally discovered in a small museum. It tells about where priceless treasures are hidden. Adventurers from different countries and bandits of one of the Chinese triads are hunting for the manuscript. However, who could assume that the key to the map, without which it is impossible to find the treasure, has been stored for many years in the mysterious artifact Heart of the Dragon, belonging to an ordinary Russian Leonid Glebov? So far, only his daughter knows about this. But as soon as she tries to contact her father, the trace Treasure hunters are unleashed...