Zahrellion, Rikky, and their dragons embark on a quest to find the special mushrooms Mysterian needs to save Prince Richard from Gravelbone's poison. Meanwhile, Jenka and his loveable dragon, Jade, escort the King's Rangers back to Kingsmen's Keep. When Jenka and the half-elvish mute, Lemmy, find a map at the Temple of Dou, they follow it and find more trouble than they bargained for. Ultimately, the five Dragoneers come together as they are forced to stand and face a terrible threat that is only just revealing itself... Hold on to your Dragon!