Nagumo Shuuji, a social studies teacher at Mie Prefecture’s Etsuzan Senior High School, was a former baseball player up until university when he quit after sustaining an injury. Thereafter, he worked as a sports trainer but returned to university at 32 years old in order to pursue his dream of becoming a teacher. However, his peaceful daily life goes through a change after he’s appointed to be the advisor of his school’s baseball club that is on the verge of abolition.