you have to get th mysrery gift to capture darkrai and go to the hotel inn a man will greet you there and you will fall asleep ,and poof you will apear in new moon island and have a chance to capture darkrai.
beat bryon in the steel gym, canalve city
In a house on the right side of Canalve City
i think it happens when you beat the elite four
cresselia will be roaming sinnoh
They are there because you need to give the elder of Celestic town the old charm
Get Mystery Gift and then get the member card, get the national pokedex and then try again
there is no Pokemon in the way STUPID
you went to the wrong door . try the door near the sailor in canalve city.
nbmnbmbkmb
its cause its not in the game
cross the water to the west of jubilife
There is no way normally to open the door. The only way is if you get the member pass over mystery gift. When you do, you can catch Darkrai by going to new moon island.