In the heart of Vatican City, there is a secret organization dedicated to investigating reports of miracles. Robert Nicholas, an archivist and cryptanalysis expert, and Josef Ko Hiraga, a genius scientist, are members of the Assembly of Saints. As miracle investigators, they travel the world validating particular phenomena, only to uncover events tainted with conspiracy. With orders to find out the truth behind God's works, Josef and the fiercely protective Robert venture out into the unknown.
A claim of a miracle take Hiraga and Roberto to America where they must solve the mystery behind a virgin conception but something else lies in wait.
The mystery continues for Hiraga and Roberto as the bodies continue to pile up. Will they find the answers they are looking for?
The investigation leads Roberto and Hiraga into the principal's office. As the mystery unfolds, have they found a true case of demonic possession?
Hiraga and Roberto get to the depths of the mystery, but will what they find shake their faith?
The backstory between Hiraga and Lauren's relationship comes to light as they talk about past cases.
An investigation of into whether a man by the name, John Jordan, should be a saint leads the examiners to a remote village. The question lingers, was he a prophet or not?
The dead man's prophecy weighs heavily on Roberto. As Roberto finds himself delving into rituals he finds within "cursed books", Hiraga worries about his partner's condition.
Roberto confronts Kid Goldman about his claim that John Jordan was a prophet. Will Roberto successfully dispute his claim?
Roberto and Hiraga head to the village of Monte to investigate the mystery surrounding the legend of the Decapitating Clown.
Roberto and Hiraga continue their investigation into the legend of the Decapitating Clown, yet things just keep getting odder. Will they be able to crack this case?
The investigation takes Hiraga and Roberto deep into the Forest of the Decapitating Clown as they trace the steps of Carlo's video. In the darkness, does Hell truly await?
Ryota's condition has taken a sudden turn for the worse. Will he need a miracle to make it through alive?