Long before time had a name, Ninjago was created by the First Spinjitzu Master by using the Four Elemental Weapons of Spinjitzu; weapons so powerful, no one can handle all of their power at once. When he passed away, his two sons swore to protect them, but the oldest, Lord Garmadon, was consumed by darkness and wanted to possess them all. A battle between brothers broke out and Lord Garmadon was struck down and banished to the Underworld. Peace returned to Ninjago as the younger brother, Sensei Wu, hid the elemental weapons in the far corners of Ninjago.
Short film depicting a battle between dojo Master Wu and an intrusive chicken.
On the Ninjago holiday: Day of the Departed, the ninja remeber those who have departed. Jay visits his parents at the junkyard; Lloyd and Misako remember Garmadon in the Corridor of Elders; Zane remembers his father in Birchwood Forest and Kai and Nya remember their parents too. Cole, unable to fully accept being a ghost, visits Sensei Yang as he begins to fade from existence, but accidentally releases the spirits of the ninjas' past enemies, resulting in an epic fight.
Shunned by everyone for being the son of an evil warlord, a teenager seeks to defeat him with the help of his fellow ninjas.