Speak to Officer Reynolds at @ 349 43 728
With a water type Pokemon in your party, go around to these four locations IN THIS ORDER, and select “Yes” to save the Pokemon.
First location @ 358 45 724
Second location @ 294 49 730
Third location @ 276 46 734
Fourth location @ 357 41 765
Go to Wald's house @ 303 70 768
Right click then click “Yes” to extinguish Wald. After you extinguish Wald he is going to wonder off, and Azelf is going to save Woodburn
Find Wald here @ 338 43 725
Battle:
Once you defeat Wald, you have completed the quest and will receive these rewards: