The Dark Organization's base was stationed in an Undead Secret Realm.
More precisely, it was situated on Little Skeleton's side.
Coincidentally enough.
While Lu Wu was engulfed in the Extreme Cold Hell and in a special state, Little Skeleton also experienced an accident on his end.
That day, as he was scanning around with his large phone in the Undead Secret Realm, a figure suddenly appeared out of nowhere. Upon making eye contact with Little Skeleton, the figure snatched Little Skeleton's phone and turned to flee.
It was a blatant, rough ploy to bait someone.
With Little Skeleton's smart head, it was impossible for him not to see through it.
But seeing through it was one thing, and pursuing was another matter entirely.
To Little Skeleton, the phone was second only to—or even to some extent, even better than—Lu Wu; anything could be stolen except for his phone!
If they stole Lu Wu, he would get angry, but if they stole his phone, he would fight to the death.