Season 2: Rise of Spinjitzu Master

Story:

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 ageing 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 group 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. Lloyd uses his newfound Golden Power to defeat the Overlord, purging Garmadon of his evil in the process.

Episodes:

14. "Darkness Shall Rise"
15. "Pirates vs. Ninja"
16. "Double Trouble"
17. "Ninjaball Run"
18. "Child's Play"
19. "Wrong Place, Wrong Time"
20. "The Stone Army"
21. "The Day Ninjago Stood Still"
22. "The Last Voyage"
23. "Island of Darkness"
24. "The Last Hope"
25. "Return of the Overlord"
26. "Rise of the Spinjitzu Master (Season Finale)