With Omi still trapped in the past, the Dragons and Jack Spicer are captured by Wuya's evil forces. The final chapter is at hand, and Raimundo must come to gripes on where he belongs...

Jack stupidly sells all his Shen-Gong-Wu, except for the Monkey Staff, in order to buy robot parts so he can build a robot servant. He sells them to Pandabubba, the crime boss that works in Hong Kong's underworld. Pandabubba sends his henchmen all over Hong Kong, equipped with the Shen-Gong-Wu, to loot. The Xiaolin Warriors must figure out a way to stop them, but their faith lacks in Raimundo, as he still isn't a Xiaolin Apprentice.

After receiving a warning message from Omi in the future, the Warriors set out to find the time-traveling Shen-Gong-Wu, Sands of Time. In the message, future Omi explains that evil is ruling the universe, and the Sands of Time is the key to changing the future. Jack, however, beats them to it and uses it to travel back in time to recruit some of the world's ruthless villains. He also brings his future self into the present time, knowing that future Jack already knows the locations of all the Shen-Gong-Wu before they reveal themselves!

Guan, one of the greatest warriors of all time, shows up and meets the Xiaolin Warriors for the first time. Guan tricks Dojo to accompany him to a palace where Chase Young, one of the most evil villains of all time, resides. However, Dojo doesn't know this. There, Guan trades Dojo to Chase in order to get his Spear of Guan back. Without the Spear, Guan is practically nothing. Dojo is horrified when he learns what Chase plans to do with him.

After the Warriors befriend a mermaid trapped in ice that's being hunted by an ancient warrior, they soon discover that the warrior and mermaid aren't exactly what each appears to be.

The Warriors travel to Tokyo in search of the Zing Zom-Bone, a Shen-Gong-Wu that can turn anyone into a zombie-like state. Once there, they meet up with Kimiko's father, who is the owner of a major video game company. Unbeknowst to the Warriors, Kimiko's father brings in Pandabubba as his new business partner, not knowing he's in fact a criminal. Jack finds the Zing Zom-Bone first and brings it to Pandabubba who uses it on the company's workers and Kimiko's father to do his bidding. Can the Warriors stop Pandabubba a second time?

Master Fung gives the Warriors their new and most important responsibility: guarding the Heylin seed from the forces of evil. But when they fail, they must find the Moonstone Locust to defeat the evil plant. Meanwhile, Vlad returns and forms a partnership with Jack.

Jermaine returns and joins the Warriors as a Wudai Warrior, which is more advanced than a Xiaolin Apprentice. Omi is discouraged that Jermaine is ranked higher than him, and they constantly confront each other because of it. Jack soon learns that Jermaine's master is Chase Young, who doesn't know Chase is on the side of evil. Upon hearing this, the Warriors rush to notify Jermaine before it's too late. However, because of his encounter with Omi earlier, Jermaine refuses to listen.

With Omi gone to the dark side and Master Fung in an unshakeable meditative state, things look bad. They get worse when Chase Young uses the Serpent's Tail/Reversing Mirror combo to restore Wuya to her human form, albeit without her powers. Meanwhile, the Warriors minus Omi discover that it was Chase who sent Master Fung into the Ying-Yang world, and that unless you have the Yang Yo-Yo, your good chi will be trapped there. Master Fung apparently put himself in a meditative state to keep his evil side under control, but Omi wasn't so lucky. The Warriors and Dojo, with Jack Spicer tagging along, decide to retrieve Omi and Master Fung's chi from the Ying-Yang world . . .

The monks are now Wudai warriors, and they are going on their first Wudai quest. They received an omen from the singing old lady that the Bird of Paradise is coming. Their quest is to find the Bird of Paradise using a mystical leaf and using no Shen-Gong-Wu, they must search for the bird in Chase Young's domain. Using their new Wudai powers they've overcome obstacles that Chase Young has put in their way. When the warriors found the bird, they met with Chase and had a battle. At the end of the battle Jack appeared and took the bird. For our warriors, they were sad. Chase and Wuya left. And the same singing old lady comes back... What is the lady going to say to our warriors?

A new Shen-Gong-Wu, the Moby Morpher, has been revealed. Kimiko manages to get it, but it is soon stolen by the Ying-Ying Bird. The bird takes it to Hannibal Roy Bean -- the villain who turned Chase Young evil -- in the Ying-Yang World. Hannibal Bean then tricks Jack into freeing him from the Ying-Yang World, and now Bean plans to unleash a new type of evil on the world. Is this the end?

It is Chinese New Year and everyone except Omi receives gifts from their families. In an effort to cheer him up, Master Fung suggests Omi go on a quest to find where he belongs. The Warriors travel to a town where everyone looks exactly like the young monk. There, Omi finally finds his 'parents', though they are not exactly what he expected. Much to his fellow Warriors' dismay, Omi decides to stay with them on their farm. Now with one less warrior at the Xiaolin Temple, Wuya, Hannibal Bean and Jack plot to break into the Temple to steal Shen-Gong-Wu ... However, they do not know that they are being closely watched.

A new Shen-Gong-Wu is revealed, the Rio Reverso! A Wu that can change any object into its original form. Jack goes after it and with some help from Wuya Jack receives the Rio Reverso. Jack plots a plan to make an army of baby Dinosaurs made from oil. Wuya steals Jacks Rio Reverso and Wuya steals Jacks idea of an army of Dinosaurs and she ends up creating an adult T-Rex. How will the Wudai Warriors face this Dinosaur?

With the Shadow of Fear and Sapphire Dragon, Hannibal Bean enters Raimundo's mind to bring out his worst fear and use it against him and the monks. While they are busy fighting his fear, Bean puts his plan into motion to try and slowly break down Raimundo....but soon finds out things may not turn out the way he expected.

Hannibal Bean gets into Omi's head while he is sleeping and tells Omi that he should take all the Wudai Warriors elemental Shen-Gong-Wu and master the power of the elements to become the Xiaolin Leader. The whole thing was a set plot for Hannibal Bean, now will Hannibal Bean destroy Omi and take his elemental powers, or can Omi stop Hannibal Bean before it's too late?

Master Fung tells the monks that the leader will be revealed after they do their last quest. Omi decides to go back in time and stop Chase from entering the Heylin side. Realizing that he needs the Sands of Time, Omi freezes himself for 80 years in order to talk to his old self.