This small business, also known as The Four Weapons, originally belonged to Kai and Nya’s parents. It was renowned for the quality of its product, particularly the swords, which were incredibly durable. After Lord Garmadon was banished to the Underworld, Wu hid the Four Golden Weapons of Spinjitzu and created a map to their locations. He entrusted the map to Kai’s father, who hid it in the shop (thus the name The Four Weapons). After his death, Kai and Nya took over running the shop.