The invasion of an alien race known as the Oni begins a new life for Ataru Moroboshi, a lecherous trouble-making tenth grader in the small town of Tomobiki. After unwittingly proposing to the Oni princess Lum Invader instead of his sweetheart Shinobu, Ataru becomes a conduit for aliens arriving on Earth, causing all sorts of havoc for him and his companions, not to mention his own reputation!
The mischievous students of Arama Academy meet their match in a beautiful and clever new teacher, Miss Machiko! But they're determined to find a prank that will really humiliate her.
The first animated adaptation of the 1960s gag manga series, focusing on the adventures of the identical 10-year-old Matsuno sextuplets, led by the titular brother himself. Aside from the Matsunos, the series also showcases the tales of their rival Chibita, and the constantly job-switching conman Iyami.