Yukio Tanaka, known as Koyuki, drifted through his middle school days, immersing himself in J-Pop and navigating life with indifference until a chance meeting with the mysterious guitarist Ryuusuke Minami, also called Ray. This fateful encounter sparks Koyuki's awakening to the world of Western rock music and ignites his passion for playing the guitar. Despite the hurdles that come his way on the road to rock stardom, Koyuki remains steadfast in pursuing the music that gives his existence meaning, juggling this dream alongside his academic responsibilities, job, and friendships. 'Beck' chronicles the trials and joys of chasing a musical career as Koyuki and Ray strive to bring to life the guitarist's vision of the ultimate band.