The leader of the "Little Busters," Kyousuke, returns to school after a job hunting break and calls the old gang together. He suggests that they all do something that they can only do now, while they're young - and that something is playing baseball. Now all Kyousuke, Riki, Masato, Kengo, and Rin need to do is find enough new members to make a complete baseball team...

One of Rin's cats brings her yet another mysterious note. This time its cryptic demand is to "save the school cafeteria" - but none of the Little Busters can see what about the cafeteria needs saving.

Sasasegawa Sasam and Rin continue to have battles, but that is pushed aside for as another one of her cats have brought her a mysterious message to help another student.