After saying goodbye to his former teammates in the Kaido High School baseball club, Gorou Honda returns to his hometown, eager to keep playing. However, attending a new high school turns out to be harder than he first thought, because Tetsufumi Egashira’s ruthless slander of his name stops Gorou from joining any school that already has a baseball team. With no other choices left, Gorou enrolls at Seishuu High School, where his childhood friend Kaoru Shimizu also studies. Yet Seishuu was an all-girls school until two years ago, meaning there is still no dedicated men’s baseball team. Still, nothing will deter Gorou from his quest for Koshien. He must now build a baseball team from the ground up with the seven male students at Seishuu, but they are all complete novices! He resolves to train this inept squad to a nationally competitive standard, though such an achievement is easier said than done. Will Gorou pull off miracles once again? Or will he abandon his goal of defeating Kaido with his own team?