Sumatra is the sixth largest island in the world. To travel in this territory of 60 million inhabitants lacking reliable infrastructure, some workers are forced to resort to archaic means. So, Masinis cobbled together his own motor wagon to use the old railway line. The pitiful state of the rails forces him to take great risks. But without it, farmers, villagers and gold prospectors would find themselves very destitute. For his part, Rudi must also face many dangers at the wheel of his minibus.