Gohan Son and Piccolo are peacefully playing when they sense a powerful entity approaching Earth. It soon reaches everyone's ears that this entity is in fact a small planet on a deadly collision course with Earth. Gokuu Son and Kuririn attempt to change the small planet's path with a Kamehameha, but the attack fails and the two warriors are blown away. However, after coming very close to Earth's surface, the object changes direction on its own and explodes soon after. The small planet reveals itself to be a vehicle for what seems to be a castle. A large army emerges out of the structure and declares that the planet is now in possession of Slug, king of the universe. While defending the city against the invaders' attack, Gohan loses his Dragon Ball, allowing Slug to take it. After reading Bulma's mind and stealing her Dragon Radar, Slug commands his army to collect the wish-granting relics. With the Dragon Balls in his possession, he uses them to wish his youth back. Now young, wise, and very powerful, Slug commences world domination.

Goku and Kuririn are given an assignment by Kame-Sen'nin: Retrieve the sleeping princess from Lucifer and I will take you as my students. But the mission proves to be more perilous than originally thought. (Source: ANN)

There is no such thing as an uneventful day in the life of kindergartener Shinnosuke Shin-chan Nohara. The five-year-old is a cut above the most troublesome, perverted, and shameless kid one can imagine. Shin-chan is almost always engaged in questionable activities such as forgetting about a friend during hide and seek, sumo wrestling for love, performing various gags including the notorious elephant in public, and flirting with college girls. The exemplary troublemaker has done it all and has no plans to stop anytime soon. Crayon Shin-chan follows the daily shenanigans of Shin-chan with his group of friends, parading around as the self-proclaimed Kasukabe Defense Force. The adults witnessing these shenanigans unfold can't help but adore Shin-chan, as he keeps them entertained while unintentionally solving their daily troubles through his mindless antics—leaving himself as the only problem they do not know what to do with.

Tucked in the mountains near the elite Kunugigaoka Middle School lies a small derelict building that houses the delinquents and dropouts of Class 3-E. Looked down upon by their peers, the students in this class appear to have little hope in advancing their academic careers. That is, until the national government tasks them with eliminating the greatest threat to their planet: their new teacher. Having already destroyed the moon, the octopus-like professor—dubbed Koro-sensei—has now threatened to destroy the Earth by March of the following year. In light of their mission, the students have found that killing him is easier said than done. Not only can Koro-sensei move at speeds of up to Mach 20, but he can also resist almost every earthly weapon. Ironically, he also proves to be one of the best teachers Class 3-E has ever had. Training the class to excel in both their studies as students and skills as assassins, Koro-sensei is confident that his students' ingenuity and indomitable will could return them to the main campus. Through trial and error, Nagisa Shiota, as well as the other students of Class 3-E, must figure out Koro-sensei's weaknesses—and fast, for the very fate of the world depends upon it.