South of the Monastery of Spinjitzu, Ignacia is the homeland of Kai and Nya. It is located on a rocky hillside, surrounded by trees and shrubs. A stone path outlines the entrance of each home, and a tall water tower is located next to the local Blacksmith shop.
Supposedly, there was a battle long ago near Four Weapons, before Garmadon turned evil, and Ray fought alongside the two brothers. It seems that when Samukai says that he wanted revenge on Garmadon from turning against him, he was referring to this incident.
Master Wu returned to Ignacia in search of the blacksmith's son, Kai, and left disappointed in the man's arrogance. Mere minutes later, Ignacia fell under attack by Samukai and his skeleton army. Nuckal and Kruncha trashed Four Weapons looking for the map to the Golden Weapons while Wu returned and fought Samukai, resulting in the destruction of the water tower. Nya was kidnapped during the battle, and Kai left with Master Wu to train in the ways of the Ninja.
Nya returned to the village after being rescued, and when the Ninja returned, the residents of Ignacia celebrated.
Lord Garmadon used his Mega Weapon to go back in time to keep Nya from being kidnapped, thus preventing the Ninja from becoming united. The Present Ninja went back in time to tell Past Master Wu what happened so that he could help them stop Lord Garmadon. When the Bone Fist misses, Samukai orders a retreat and takes the Skull Truck back down the road with the other skeletons. Master Wu tries convincing Kai to become a ninja so that the future will be saved, but he doesn't want to go. Finally, Nya says she wants to become a ninja, and Kai goes only because she does too. The Ninja follow along to make sure he becomes one of them and unlocks the fire inside.