Ninjago: Masters of Spinjitzu - Season 0 Episode 2

Long ago, the Four Golden Weapons of Spinjitzu were created by a great warrior who created Ninjago, the First Spinjitzu Master. When he passed away, his sons were tasked with protecting them but the older brother was consumed by evil and became Lord Garmadon, determined to use the weapons to reshape Ninjago in his own image. Sensei Wu was forced to banish his brother to the Underworld and hide the four weapons with dragons as guardians. However, Lord Garmadon has recruited an army of skeletons to find the map that will lead them to the four weapons. Sensei Wu needs Kai, Zane, Cole and Jay to use Spinjitzu and the Tornado of Creation to find the weapons first. Only then will the world be safe.