Marvin (here referred to as Commander of the X2 vessel) is traveling to Earth. Upon landing, he opens his assignment envelope: Return one Earth creature back to Mars (signed by General E=mc²). With the help of his dog, K-9 (who "talks" to Marvin by handing him notes), he finds Bugs's rabbit hole. As the two observe the hole, they are pushed back when Bugs cleans out a bucket of carrot stems. Seeing their getup, Bugs assumes it must be Halloween.
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