The largest prison on the planet has rebelled in a distant colony. The situation is critical. There is no army, the police are small, and they will not be able to cope with a huge army of convicts. But in reality, the prisoner revolt turns into a prelude to an even larger rebellion. The colony coped with the prisoners, but, no less, declared its own independence. However, the vengeful metropolis will not simply let go of the small but very proud colony. There is a war ahead, a battle with an enemy much more advanced economically and technically. However, on the side of the rebels is their home planet with its inhospitable climate and a huge number of tunnels, which will replace forests and jungles for the fighters for independence.