The Angel's Mandate is a first-person horror game where you play as Jesse, who finds himself in the palace of an archangel once his mother falls ill, losing her physical abilities progressively. The angel says she knows of a way to create a cure, and after taking you to her palace, she explains what you must do: collect monuments in each level, which were shattered once fiends were banished to their dimensions, and are now protected by them. Your goal is to collect the monument fragments in each level, reform them, and use them to create the cure for your mother.