Sia, a university student chasing his dream of becoming a musician, lives a quiet life filled with uncertainty. Everything changes when he meets Blue, a former senior from his music club who died years ago. Blue's unexpected return from beyond the grave brings more than just fear. It awakens a connection Sia never saw coming. When a mysterious pact binds their souls, the line between the living and the dead begins to blur. Sia is pulled into a journey that will change everything, with no way back.