Sō Utsumi doesn't have many friends. After school and before going to a private institute, he kills time by doing nothing on the riverside. One day, Shōkichi Seto appears in front of him. Shōkichi quit the soccer team and has nothing to do. They spend time together.

In front of the two guys, Ichigo Kashimura and Hatsumi, from the same high school, appear.

本剧描写的是关西的两名高中男生濑户与内海，放学后在河边唠嗑的故事。沉默寡言的内海与善于交往的濑户，两人的性格完全相反，却因为“打发时间”这一点而达成共识。当下午放学后，他们便相约来到河边坐下，海阔天空地闲聊起来。电影中未出现的角色初美、田中君、马场君以及大猩猩老师等原作中的人气角色也将在电视剧中大放异彩。

고등학교 2학년의 안경을 쓴 과묵하고 쿨한 성격의 우츠미와 과거 축구부원이었던 세토가 방과 후에 강변에 앉아 시간을 때우면서 대화를 나누는 모습을 그린 드라마

高校生の瀬戸と内海が河原の階段でたわいもない話をするお話。特に大きな事件が起こることもなく、河原での時間つぶしが繰り返されていく。