第 4 季 共 10 集
播出时间：2015年2月24日
第 1 集 The Invitation
播出时间：2015年2月24日
The Ninja are invited to partake in the Tournament of Elements; there is a clue that Zane may be alive.
第 2 集 Only One Can Remain
播出时间：2015年3月3日
On the island, Lloyd learns that his father used to train under the deceitful Master Chen and when the Ninja meet the playfully deceitful ruler, they realize they are in a tournament where "only one can remain."
第 3 集 Versus
播出时间：2015年3月10日
In order to find Zane, the ninja stay in the tournament to get past the first round but Chen complicates things by changing the bracket and pitting Jay against Cole.
第 4 集 Ninja Roll
播出时间：2015年3月17日
Chen pits everyone against each other in a ludicrous roller skating event called Thunderblade. When all contestants team up against the ninja, the ninja share inside information on Chen to get help from a new alliance in order for Lloyd to move on in the tournament.
第 5 集 Spy For a Spy
播出时间：2015年3月24日
The ninja have a secret alliance of elemental fighters, Cole has found Zane, and Nya is a spy within Chen's Kabuki to figure out what nefarious plot Chen is up to. But Chen upends the alliance by promising the all-powerful Staff of Elements to the victor, and reveals that he too has a spy in the tournament.
第 6 集 Spellbound
播出时间：2015年3月31日
Nya has proof of Chen's plan, but he convinces the contestants to hunt her down with promises to advance the winner, forcing the ninja into a race to get to her first. Lloyd discovers Chen's plan to steal everyone's power so that he can complete a spell and turn his worshipers into Anacondrrai and bring the return of the Serpentine War.
第 7 集 The Forgotten Element
播出时间：2015年4月1日
After stealing the remaining contestant's powers, Chen only needs Lloyd's power to complete the spell. Knowing his daughter has feelings for Kai, Chen tries to enlist the Fire Ninja by promising to share secrets about his parents. All the while, Lloyd tries to rescue the ninja, pitting him in a showdown with Chen.
第 8 集 The Day of the Dragon
播出时间：2015年4月2日
Chen has failed to bring the return of the Serpentine War but Clouse revels that there is another way - his daughter has the ability to absorb the power of every fighter she comes across, so she can complete the ceremony. Skylor finally sees her father for who he truly is and manages to send an SOS to the ninja.
第 9 集 The Greatest Fear of All
播出时间：2015年4月3日
The ninja reunite with Wu and turn to the aid of a shrunken Pythor in order to figure out how to defeat the unstoppable Anacondrai - but before they can get answers, Pythor is abducted by the Anacondrai and Chen uses his essence to make his worshippers' transformation into Anacondrai permanent.
第 10 集 The Corridor of Elders
播出时间：2015年4月4日
The ninja and fighters discover there's a strategic location called the Corridor of Elders where they can make their last stand against Chen's Anacondrai army... but even with new Destiny Bounty, their forces still aren't strong enough. Fortunately, Pythor escapes Chen's clutches and discovers there is one spell in the Book of Magic that could stop the war, but at a a serious cost.
