On a Sunday morning, young dentist Toshio Ezaki wakes up with a hangover, on a bench in his office. He finds a poisoned woman in a green-striped Western-style outfit lying in his exam room. He must retrace his blurry steps of the night before, and navigate a web of embezzlement, murder, framings, and false identities in Tokyo's Ginza district, to discover the identity of the dead woman and why she is there—and hopefully prove his innocence, before his wedding in three days...