The Looney Tunes celebrate Halloween; a close friend of Daffy and Porky is taken to their final resting place; Witch Hazel runs after an ingredient which is needed for her spell; a suspicious motel is found by Sylvester; Bugs comes across a mummy.
Bugs Bunny tries to foil Marvin the Martian's invasion of Earth. Ralph Wolf tries to steal a sheep from Sam Sheepdog's flock by using various disguises.
Bugs Bunny faces off against Taz in the Roman colosseum. Marvin accidentally plants his flag on the home of an irresistibly cute Martian. Wile E. Coyote orders a weather control kit, but his chances of catching Road Runner remain cloudy.
Gangsters Rocky and Mugsy hide out in Bugs Bunny's rabbit hole and soon regret it; Daffy requests Porky be his assistant for his `magic trick' on stage, but he just ends up handing him a mop to clean the stage.