In the distant past, the evil Aku attacks the land with his black magic. A brave samurai prepares to face this danger and stop it before Aku breaks the resistance of the entire world.
After being flung into a strange, alien landscape, Jack befriends some talking dogs and leanrs that this place is his home- in the distant future. It appears that Aku manages to send the samurai- who goes by the name Jack- into the future, a future that Aku himself rules.
Through his network of spies, Aku learns of his enemy's return. Determined to destroy Jack, Aku sends a swarm of robotic insect drones to achieve the task. Luckily, Jack and his dog friends are tipped off before the army can reach them, and they prepare for the onsluaght. Can Samurai Jack survive this first fight? Or is he doomed?
Jack stumbles across a tribe that has supposedly evil, svage beast under their control. They call them "The Woolies". Satisfied that his help is not needed, Jack prepares to wander off. Unfortunately, the tribe isn't telling Jack the whole story, and before long the samurai is drawn ina web of deceit.
Jack meets a group of aspiring astronauts who are building a spaceship in order to blast off from Earth and so escape Aku's dark realm. However, Aku doesn't appreciate that, and sends an army of drones to eliminate the astronauts. Jack agrees to help destroy the advancing army- and once the deed is complete, the astronauts, with their advanced technology, agree to send him back in time to his home. Will Jack be able to get home?
The Three Blind Archers destroy a whole robot army. Jack then learns that their's a wishing well behind them in which you can use to get back in the past. Now Jack needs to find a way to get around them to get to that wishing well.
Aku, angry at the failure of his minions, creates an evil shadow clone of Jack himself, with orders to destory his nemesis. Jack has conquered many enemies in the past, but now he must face.... himself.
While wandering the land of Aku, Jack confronts the evil Scotsman, a samurai with skills to match even Jack. Which master samurai will emerge victorious?
Jack discovers a smelly village that is making people sick. He eventually finds out it's from a dragon and then he goes inside the dragon to help.
Aku hires four alien hunters to track down Jack and dispose of him once and for all.
Aku sends one of his most powerful minions, Demongo, to hunt down Samurai Jack using the essence of the warriors contained within him.
After battling a swamp monster, Jack has his clothing stolen by a white rabbit and pursues it down a hole into a strange underground city.
The three hundred warriors of an ancient land hold a ravine against a ravaging robot army, but Jack arrives and offers them a way around the stalemate.
When a biker gang destroy Jack's shoes, the samurai follows them to a nearby city and tries to defeat them while finding new footwear.
When Jack earns the animosity of a wizard, he ends up transformed into a chicken.
Frious at the constant failure of his minions, the great evil known as Aku abandons his dark lair, intending to intercept Jack and settle the once and for all. Insect drones, sinister robots, soul-eaters... the veil is thrust aside, no minions accompany the sorcerer. Jack and Aku stride toward each other, prepared to fight what will surely be a legendary battle.