The first three-fourths of the story is a monologue: a Terminator-like killer robot with human emotions tells us the story of his life. He formerly worked for Aku, but stopped because of his emotions and because he felt in love with a little dog.
But Aku kidnapped his dog and forces him to fight against Jack if he wants to see it again. He is tracking Jack and he is finally destroyed by the samurai His last words are for his puppy and Jack looks sadly at him. Then there is a close-up of his car and the last image of the episode is a photo of the dog.