Demitrias' Call

A man-eating plague has broken out in the tree world of demetrius and a group of 16-20 year old teens have to save the world by using ziplines and the 7 demi's (tree elements). The Queen, Queen Demitria has fallen ill due to two of the tree regions being ambushed and taken over by the plague. Two other healthy tree regions out of a total of 7 tree regions are on the brink of causing a massive war to happen. The 6 demi's give a special ability to the chosen collector and are located in 6 of the tree regions in the world of demetrius. The group of teens will have to use the technology their headmaster/sensei gave them to get past the guards of the tree regions to collect each demi. But with certain trauma some of the teens endured, who knows if they will make it out alive. Will they be able to save the world of demetrius in time before the plague kills everyone off?