Koguma, a withdrawn high school student in her second year, lacks any meaningful connections in life. Abandoned by her parents, she has no hobbies, friends or aspirations to speak of. One afternoon on her way home, she enters a vehicle dealership in the hopes of acquiring a motorbike with her limited savings. Feeling discouraged by the exorbitant prices, she prepares to leave, but at the last minute, the owner offers her a preowned Honda Super Cub for ten thousand yen. Hesitant at first, Koguma decides to take a chance and embrace the opportunity to add some excitement to her mundane existence. As she rides through town on the Super Cub, Koguma begins to discover new friendships and a sense of purpose, leaving her old life behind.