Omi, a young Xiaolin Dragon-in-training, is joined at the Xiaolin Temple by three new students, Kimiko, Raimundo and Clay. Initially, they don't get along at all. But when the ancient evil spirit Wuya is set loose after a thousand years of imprisonment, Omi soon learns to appreciate his new companions.

Everyone doubts Clay's competence. But when Omi, Kimiko and Raimundo are trapped in a magic box, it's up to Clay to save the day, which he does in his own slow and steady style.

To wield the latest Shen-Gong-Wu, the Tangle Web Comb, Kimiko must learn total focus. With her quick trigger temper, that's not easy. Will Kimiko use the Tangle Web Comb to save the day and defeat the forces of evil?

Jack recruits Katnappe, confident that she will be the one to finally take down the Xiaolin Warriors. Using the Golden Tiger Claws, Katnappe goes untouched against her foes and constantly outsmarts them. However, she also misuses them by pilfering from numerous places for her own pleasure. Omi and the rest start to get frustrated, and begin to stragetize on how they'll be able to stop this ""cat burglar"".

Jack recruits a new villain to help him steal back the Shen-Gong-Wu. That villain is Tubbimura, who is an overweight ninja. Tubbimura finds out where the next Shen-Gong-Wu, the Sword of the Storm, is hidden, and he immediately races out to find it. Omi and the rest sniff it out, too. Raimundo finds it by accident, and right there beside him is Tubbimura. Raimundo doesn't use the Sword of the Storm properly, and Tubbimura takes it from him, leaving Raimundo in the dust. Angered that he lost, Raimundo decides to study all he possibly can about the Shen-Gong-Wu so he can use what he knows to take it back from Tubbimura.

Jack kidnaps Kimiko, without the Warriors knowing, and replaces her with his latest invention: the Chameleon Bot. The robot can transform into anyone or anything it wishes, and Jack sends it to the Xiaolin Temple under the guise of Kimiko. His plan is for her to stroll right in and steal all the Warriors' Shen-Gong-Wu.

Omi misuses the new Shen-Gong-Wu, Ring of the Nine Dragons, which duplicates its bearer up to nine times. His plan is to try and do everything at once with his eight twins, but doesn't know that the Ring also divides your personality, intelligence, potential, etc. Omi uses the Ring again when looking for another Shen-Gong-Wu to cover more ground, but crosses paths with Jack, and one of the Omis unwittingly starts up a Xiaolin Showdown.

The Xiaolin Warriors uncover a mysterious Shen-Gong-Wu that holds a secret power: Once unleashed, it takes the form of a dragon and turns anybody it comes across into a sapphire statue. It all rests on Dojo to stop the Sapphire Dragon ... for everyone else has been turned to sapphire.

The gang travels to New York, where a new Shen-Gong-Wu, the Serpent's Tail has been revealed. Omi gets seperated from the group and is soon lost in the big city. Jermaine, a boy that lives there, befriends Omi and tries to help him find the Serpent's Tail. Jack and Wuya soon arrive, along with the Xiaolin Warriors, who just happen to both catch the Serprent's Tail at the same time, creating a Xiaolin Showdown involving a basketball game.

Clay's dad shows up at the Xiaolin Temple with the intention of bringing Clay back to the ranch for good. Clay tries, however, fails to convince his dad that he needs to stay with his fellow Xiaolin Warriors. Daddy Bailey takes his son back to Texas, but Dojo later realizes that Clay's dad is unawarely wearning an inactive Shen-Gong-Wu around his neck, thinking its a lone star. It activates and now the gang must travel to Texas to stop Jack from stealing Clay's Dad's Shen-Gong-Wu.

Not a single Shen-Gong-Wu has been revealed for the past few weeks, making the Xiaolin Warriors edgy. Suddenly, 4 Shen-Gong-Wu are revealed at the same time. In order to accomplish this task, the Warriors split up. Kimiko goes to a swamp, Raimundo to a beach, Clay to the Arctic, and Omi to a desert. However, Jack and Wuya are also trying to get these new Shen-Gong-Wu. Katnappé, Tubbimura, and the Chameleon-Bot (version 2.0) decide to help Jack and Wuya track them down. What happens when there are 4 Xiaolin Showdowns at the same time? How will the Xiaolin Warriors prevail?

Wuya uses Raimundo to steal Shen-Gong-Wu from the other three Chosen Ones. What then happens is she uses the Serpent's Tail & Reversing Mirror (a Shen-Gong-Wu that reverses the effects of another) to become human once again ...