Season 2 of LEGO Ninjago: Masters of Spinjitzu, subtitled Legacy of the Green Ninja, was preceded by Season 1, and succeeded by Season 3. Lloyd was the focus ninja, and Lord Garmadon served as the main antagonist; the Serpentine were the villainous faction of the first half of the season, while the Stone Army took over during the second half.
With the Golden Weapons now in Lord Garmadon's possession, the Ninja begin training Lloyd so that he can face his father one day and save Ninjago, something which he was afraid to for the sake of their bond. Garmadon works to thwart the prophecy by recruiting the masterless Serpentine and merging the Golden Weapons into the powerful Mega Weapon. After Garmadon's last attempt ended with Lloyd aging to a teenager like his four mentors, he attempts to change the events of the past. The original four Ninja follow Garmadon and use the Golden Weapons of the past to destroy the Mega Weapon, restoring the timeline and sending the Golden Weapons into space.
While Garmadon ends up on an island with a disembodied voice called the Overlord, the venom of the Great Devourer seeps into catacombs beneath Ninjago and animates the Stone Army, trapping the Serpentine underground in the process. Along with Misako, Lloyd's mother, the Ninja travel to the Dark Island to stop Garmadon. The Ninja fail to stop the countdown to the final battle, and the Overlord is revealed to be the dark lord from the prophecy. He possesses Garmadon and heads to Ninjago, with the Ninja in tow. After they found a way out of the Island, Lloyd uses his newfound Golden Power to defeat the Overlord, purge Garmadon of his evil, and become the Golden Ninja.
|Season Ep #||Series Ep #||Image||Episode name||Airdate|
|01||14||"Darkness Shall Rise"||July 18, 2012|
|02||15||"Pirates Vs. Ninja"||July 25, 2012|
|03||16||"Double Trouble"||August 1, 2012|
|04||17||"Ninjaball Run"||August 8, 2012|
|05||18||"Child's Play"||August 15, 2012|
|06||19||"Wrong Place, Wrong Time"||August 22, 2012|
|07||20||"The Stone Army"||October 3, 2012|
|08||21||"The Day Ninjago Stood Still"||October 10, 2012|
|09||22||"The Last Voyage"||October 17, 2012|
|10||23||"Island of Darkness"||October 24, 2012|
|11||24||"The Last Hope"||November 7, 2012|
|12||25||"Return of the Overlord"||November 14, 2012|
|13||26||"Rise of the Spinjitzu Master"||November 21, 2012|
- Cole - Kirby Morrow
- Garmadon - Mark Oliver
- Jay - Michael Adamthwaite
- Kai - Vincent Tong
- Lloyd Garmadon - Jillian Michaels
- Nya - Kelly Metzger
- Master Wu - Paul Dobson
- Zane - Brent Miller
- This is the final season to contain 13 episodes.