Dionysus made a wine party, but I couldn't afford going... Imagine, a night without control? Chaos. So Dionysus got mad with me, and we had a big fight. Then, one of my Mystic Night Pearls suddenly disappeared, how, I don't really know, I always have it in a secret place that not even the other gods know... I had it in my wine cup. I think Dionysus could sense it because of the same reason. The other two pearls were hidden in other places, that's why he couldn't steal all, I guess. The Night Pearls kept the night how we know it: calm and dark. If one of the three is stolen- which is what happened- the night will start falling out of balance and if the missing Pearl isn't retrieved by the Next New Moon, the concept of night will collide. There won't be a difference between night and day. Madness will take over: The moon will collide and Implode, making Tsunamis; the gravitational pull will be different. I cant't- We can't let that happen. I think that the only one that could possibly like that madness is Dionysus, since he is even thaw God of it. Maybe in revenge he took it, although I don't think he may know the consequences. I sense it on Earth, near the Greenwich Meridian. I think that you should go there first. I love you.
Nyx needs Kirk and his team to find her stolen Night Pearl.
General idea of monsters they may encounter:
In the end, the demigods find out that it was actually a son of Dionysus, in revenge for his father. Since when they contact Dionysus by getting to his lair, he admits that he doesn't have a clue about what they are talking about.