He was born of royal blood and taken away as a young child to train with the strongest fighters in the known world.

...to one day return, bring peace to his land and rid the world of evil. To rid the world of Aku.

But before he can do that, he must find his way back from the future in which Aku had banished him.
He must find his way home.

"You might call Samurai Jack a soba western, or sashimi sci-fi.  Either way, you'll slurp it up." 
-- Time Magazine

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