The baseball club has only two members. These two guys are at their wits' end, fearing that their club will soon be disbanded. Enter a weird girl who claims to be the "No.1 High School Baseball Manager". Her goal?
To get to "The Land of Baby Cows" - or as a more sane person would put it - Koushien!

Sketchbook revolves around a group of high school students who are members of the art club at their school. The plot follows a slice-of-life style via the students' experiences at school through the club. The main character is a shy, quiet girl named Sora Kajiwara who goes through life at her own pace. She tends to look at the little things in life, and is often in awe of the simpler things. Sora knows several stray cats around her town and has given them names.