Firefighter Lin Yan was stabbed in the chest by a mysterious dark red "ember stone" fragment during a chemical plant explosion. After surviving the catastrophe, he found that he had acquired an unexplainable ability - as long as he touched the ashes or residue at the fire scene, the scene in front of him would reappear as if going back in time, allowing him to see how the flames ignited and why the disaster happened.
With this ability, Lin Yan was transferred from a front-line firefighter to the fire investigation department, repeatedly solved mysterious cases, and became a fire control wizard with "amazing intuition" in the eyes of his colleagues. However, as seemingly independent fires were connected together, an inverted triangle burn mark appeared repeatedly at the scene, as well as in the fire in which his father died twenty years ago.
