In Imperium, Arin mentors a group of eager young crimefighters. Sora confronts a villain from her past. Lloyd frees an Elemental Master from prison.

Sora hacks into the Imperium logs to find Riyu. Nya and Kai explore a mysterious passageway. Lloyd leads an epic battle against an army of Photacs.

Ninja never quit! Nya, Kai and Zane give the battle against Imperium new hope while Lloyd uncovers a mystery hidden deep below the city.

To stop the MergeQuakes from getting worse, the Ninja travel to the Temple of the Dragon Cores to learn more about something called "The Coalescence."

When the Ninja split up to find the three Dragon Cores, Arin and Lloyd take the airship but soon need help from a village of peaceful algae farmers.

Mr. Frohicky and Zane head to the Crossroads to locate a Wyconium coil. Elsewhere, Wyldfyre's pranks complicate her and Kai's Dragon Core quest.

In the Land of Lost Things, Nya runs into an old pal while Sora looks for an alternate power source to ward off a junkyard monster called "The Hoarder."

While the Ninja try to figure out a way to bypass Imperium's energy barrier, Empress Beatrix tests a deadly weapon powered by stolen Dragon Cores.

Empress Beatrix's rampage pushes the MergeQuakes dangerously close to the tipping point, unless the Ninja can work together — and save the world.

The Ninja interrogate a shifty shopkeeper about a stolen mallet. Could the ancient tool be connected to the Cloud Kingdom archives — and Lloyd's visions?

A metal gate. A teacher. And a direction...? Lloyd experiences a vision from the Source Dragons that sends the Ninja on a righteous but unclear quest.

The Ninja head to the Wyldness, where they must confront Lord Ras — whether they're ready or not. Sorceress reveals her plan for keeping Bonzle safe.

Sorceress searches the storehouse for a spell to rescue Bonzle while Arin intercepts a special package. Then, the remaining Ninja infiltrate the ritual.

Lloyd attempts to decipher his visions, while Arin uncovers a mysterious theft that threatens the Sixteen Realms while searching for his parents.

Arin runs into an old friend at the Tournament of the Sources, the Ninja explore the City of Temples, and Lloyd sees a strangely familiar face.

Nerves fray and tempers flare as the Ninja prepare to compete. Wyldfyre squares off against Cinder, leading to a serious setback for the gang.

As the Ninja fight to win the Temple Race, Ras makes a shocking claim to Arin — putting him at odds with his friends — just as the tournament heats up.

Kai makes a discovery that allows him to speak with his sister. Arin visits the Temple City museum where he has a breakthrough about the missing horns.

Wyldfyre teams up with Arin to find out if Roby is behind the stolen horns. Later, at Bleckt’s office, they make a startling discovery.

Master Wu confirms Arin’s worst fears, and the location of the horns comes to light. Later, Wyldfyre drops a truth bomb at the tournament.

The Wolf Mask army battles the Elemental Masters as the Ninja converge on the Monastery of Gates to stop Nokt from freeing the Forbidden Five.