By 2056, almost all forests were destroyed or cut down. World crises and wars could not solve the problem with the ecosystem. Spores appeared that, getting into the lungs of a person, caused mutations. A person began to turn into a tree. The process took place in several stages, and a mutated person could attack other people. As a result, a person became a plant. On average, it took a person from 2 to 5 years to go through the cycle. Gradually, humanity died out, and trees took over the world. But mutated people had children - half plants, half people. These new creatures began to build their own society. Our hero is a merchant