Stranded ninja
The stranded ninja [ 1 ] were the four original ninja ( Kai , Cole , Zane , and Jay ) and the de-aged Wu after they were stranded in the Realm of Oni and Dragons . They resolved to free the dragons from the tyranny of the Dragon Hunters , and return home to Ninjago . After Wu aged further and grew a mustache and a goatee, he proved himself worthy to the Firstbourne , and reclaimed his father 's Dragon Armor . The newly titled Dragon Master Wu and the ninja boarded their respective dragons , and were finally able to return to Ninjago. .