A girl from Hydropolis is worried about her pet lizard, Drakon, as her mother views it as dangerous and does not want her around it. Drakon is being hidden in Coral Cave, which is on the island of Makronos. If you fully explored the isle, then you recall that Coral Cave is the one on ground level, in the far back. You need to use the coral pathway on the western side to reach it. When you enter, you won’t find Drakon, but a level 49 Wavewyrm will show up to fight. You’ve fought these types of enemies enough to know what it does, so keep attacking it until its health gets low, where a scene will play out. Once it’s over, return to the girl in Hydropolis to finish the quest.