Peter (played by Sean DeGuzman) is a photographer for weddings and events. However, in his spare time (many recently), he strolled in a picturesque remote lakeside camping area where couples came to camp outdoors. Peter will track these couples and secretly take videos of them having sex while getting off the car. Then, he will publish these sex videos on an online pornographic website to make money from them. One day, Peter followed a young woman named Mia (played by Kara Gonzalez) and filmed her while she was taking a shower. Mia was not angry, but on the contrary, she was very friendly to him. However, she has a hot tempered and sinister looking boyfriend RJ (played by Joseph Elisard) around her, who doesn't like Peter being with his girlfriend. The next time Peter secretly filmed a video of Mia having sex with RJ, he witnessed Mia suddenly slashing RJ's neck.
不知从哪里冒出来，擅长节奏的曹碧主动提出帮助佐藤练习唱歌。经过许多天的相处，草碧逐渐被严肃的萨索所吸引，但他一直被对方因为他而如此努力地学习唱歌所困扰。在合唱团音乐节当天，草比突然控制不住自己的情绪，在正式表演中途跑了出来，佐藤紧张地追了上来。在空无一人的校园里，两人终于向对方确认了自己的意向。夏天即将结束，他们年轻时的诗歌才刚刚开始。《同级生》是由a-1影业制作的剧场版动画，改编自中村美子的同名漫画。
