Four Dragons

"There is a disturbance at the Great Trees. A new threat menaces these secluded areas found in Ashenvale, Duskwood, Feralas, and Hinterlands. Four great guardians of the Green Dragonflight have arrived from the Dream, but these once-proud protectors now seek only destruction and death. Take arms with your fellows and march to these hidden groves -- only you can defend Azeroth from the corruption they bring."