Jinta Yadomi is peacefully living as a recluse, spending his days away from school and playing video games at home instead. One hot summer day, his childhood friend, Meiko "Menma" Honma, appears and pesters him to grant a forgotten wish. He pays her no mind, which annoys her, but he doesn't really care. After all, Menma already died years ago. At first, Jinta thinks that he is merely hallucinating due to the summer heat, but he is later on convinced that what he sees truly is the ghost of Menma. Jinta and his group of childhood friends grew apart after her untimely death, but they are drawn together once more as they try to lay Menma's spirit to rest. Re-living their pain and guilt, will they be able to find the strength to help not only Menma move on—but themselves as well? [Written by MAL Rewrite]

"Mushi": the most basic forms of life in the world. They exist without any goals or purposes aside from simply "being." They are beyond the shackles of the words "good" and "evil." Mushi can exist in countless forms and are capable of mimicking things from the natural world such as plants, diseases, and even phenomena like rainbows. This is, however, just a vague definition of these entities that inhabit the vibrant world of Mushishi, as to even call them a form of life would be an oversimplification. Detailed information on Mushi is scarce because the majority of humans are unaware of their existence. So what are Mushi and why do they exist? This is the question that a "Mushishi," Ginko, ponders constantly. Mushishi are those who research Mushi in hopes of understanding their place in the world's hierarchy of life. Ginko chases rumors of occurrences that could be tied to Mushi, all for the sake of finding an answer. It could, after all, lead to the meaning of life itself. [Written by MAL Rewrite]

Kino, a 15-year-old traveler, forms a bond with Hermes, a talking motorcycle. Together, they wander the lands and venture through various countries and places, despite having no clear idea of what to expect. After all, life is a journey filled with the unknown. Throughout their journeys, they encounter different kinds of customs, from the morally gray to tragic and fascinating. They also meet many people: some who live to work, some who live to make others happy, and some who live to chase their dreams. Thus, in every country they visit, there is always something to learn from the way people carry out their lives. It is not up to Kino or Hermes to decide whether these asserted values are wrong or right, as they merely assume the roles of observers within this small world. They do not attempt to change or influence the places they visit, despite how absurd these values would appear. That's because in one way or another, they believe things are fine as they are, and that "the world is not beautiful; therefore, it is." [Written by MAL Rewrite]

Fourteen-year-old Yukio "Koyuki" Tanaka is a dispirited young boy with no goals in life. However, this all changes when Koyuki saves a strange-looking dog named Beck from being harassed by a group of local kids. The dog's owner, 16-year-old Ryuusuke "Ray" Minami, is an emerging guitarist and the former member of a popular rock band. After Koyuki meets Ray again in a diner, the older boy leads him to his former band's meeting place and dazzles Koyuki with his amazing guitar skills. Slowly becoming interested in the glamour of western rock culture, Koyuki decides to start playing the guitar while helping Ray achieve his dream of leading the ultimate rock band. Together with Ray's younger sister Maho and a few other members, the two boys launch their career into the world of rock by forming a band called BECK. Beck follows the group's struggles and successes as they spread their fame across Japan. [Written by MAL Rewrite]