Dennis the Menace Giant Vacation Special #[nn]

Dennis Mitchell wanders off at the beach and ends up in the hands of a police officer, who takes him to the station for safekeeping. By the time his parents arrive to pick him up, Dennis has turned the precinct into a whirlwind of chaos, leaving the officers exhausted and bewildered.

After watching a science fiction TV show, Dennis Mitchell imagines himself as a galactic hero on a mission to Mars. Armed with his trusty slingshot and water gun, he bravely defends the Martians from an invasion by Venusians, but soon finds himself stranded far from home—trying to figure out how to get back to Earth.