Aku has transported his mortal samurai enemy into the far future in which Aku rules all. Now the warrior has to find a way back while adjusting to his new surroundings. He also takes a new name: Jack.

While hunting for food, Jack helps the tiny Chritchellites recapture an escaped Woolie. But once they invite him back to their village for dinner, Jack begins to suspect an unbalance in the pecking order.