Fourth season of .

Gorou Honda has finally returned to Mifune East Junior High School, surprising his friends upon arrival. Now, Gorou is once again surrounded by those he holds closest, and he strives to continue playing and enjoying the game he loves most. However, things do not go as planned, as Gorou is reminded of the harsh realities of baseball as he copes with an injury he sustained while playing baseball at Hitaka Little. Between new rivals, old friends, and mending broken relationships, Gorou must overcome challenges he has never faced before. His goal of attending elite baseball high school Kaido may not be far from his reach, but complicated circumstances may stop him in his tracks once again. How will he deal with the immense pressures of the game? And will he ever be able to find the type of baseball he loves most? [Written by MAL Rewrite]

A mysterious entity known as the "Big Gete Star" clings onto planet New Namek to absorb its energy, putting all Namekians in grave danger. Dende, Earth's new guardian, learns about the prevailing situation in his homeland and quickly requests Gokuu Son and his friends for help. 

Upon arrival in New Namek, they discover that the Namekians are held captive by powerful robots, whose leader turns out to be Cooler. He explains that the advanced technology of the Big Gete Star saved him from what otherwise would have been certain death. Alongside his mechanical army, Cooler proceeds to attack Gokuu and his friends to get rid of them once and for all.

[Written by MAL Rewrite]