A foreign rock band, Aurora. During his school days, Gio stumbled upon them by chance, and they became his muse. Years later, Gio followed his passion for music and became a skilled composer. However, the band that once inspired him, Aurora, couldn’t survive the oversaturated music industry and eventually disappeared. Just when Gio thought he had lost them for good, a mysterious man named Seonkyu appeared before him. Their first encounter was suspicious, but through his close friend Heeseop, Gio discovered an incredible fact that Seonkyu’s voice was eerily similar to Aurora’s lead vocalist. Gio only needed to hear one verse, but it became much harder than expected.