Josef and Robert walk into rooms where people claim God showed up, and the show treats that claim like a real problem to solve, not a punchline. The Vatican sends them because the Church needs answers that don't crumble under scrutiny, and neither investigator believes anything until the evidence forces them to. It builds conspiracy threads that feel genuinely dangerous, then sometimes tangles them into knots that don't quite untie, but the ride there, the atmosphere, the chemistry, the willingness to let Catholicism be weird and complicated on screen, makes you stay anyway.

Two priests from a secret Vatican organization travel the world as miracle examiners, testing whether reported miracles are authentic. Hiraga Josef Kou is a genius in science and mathematics, while Robert Nicholas is an archivist and codebreaker with deep knowledge of languages and the classics. Together they work to bring the truth behind each phenomenon to light. Again and again, events that look sacred turn out to hide conspiracies, murders, deceit and devil worship. Robert is fiercely protective of his partner, and the dark cases they uncover test both their friendship and their faith. The series adapts Fujiki Rin's novels and mixes mystery, drama and the supernatural.