In this fantasy investigation series, investigators from two eras must hunt for the truth in old unsolved cases, communicating only through an old radio. The signal between the past and the present only opens at 23:23.
Sun, an autistic man obsessed with finding a means of ending his life but who never succeeds in carrying it out, has to put his plans of suicide on hold once again when Uncle Mok, the owner of a coffee shop and little library called Tiny Butterfly, dies suddenly in the street right before his eyes. He isn't alone, though. Yaimai, a financial planner who likes one-night stands, and Tor, a sixteen-year-old runaway, also happened to bear witness. Together, the three strangers give their account to the police and arrange the kinless man's funeral.