Shigeno Daigo is a grade schooler who's father is a professional baseball player.
Being enamored with his father Goro, who once even played in the Major League, Daigo joins the "Mifune Dolphins" baseball team.
However, with the pressure of measuring up to his father, he can't improve enough and quits after less than a year and turns to an uninspired lifestyle.
Then, in the spring of 6th grade, a transfer student from the United States arrives.
The new baseball anime you've heard so much about is finally ready to play ball!
Pop, I'll show them what 
Shigeno Goro the Second is made of!
Vater,
Papá, les mostraré lo que puede hacer
el segundo Goro Shigeno.
Papá, les mostraré lo que puede hacer
el segundo Goro Shigeno.
Je vais vous montrer la force
du fils de Gorô Shigeno !
Papà, glielo farò vedere io 
di che pasta è fatto il figlio di Goro Shigeno!
Pai, vou mostrar do que Shigeno
Goro, o segundo, é feito!
Пап, я покажу им,
чего стоит Горо Сигэно-младший!