Firefighter Zhang Wenxuan and investigator Yu Hao, due to an elderly solitary resident fire accident, accidentally meet Wang Dajun, a party involved in the restaurant old case ten years ago—that fire ten years ago made Zhang Wenxuan encounter danger, Yu Hao lose his mentor, and Wang Dajun suffer severe injuries. One scar connects two fires, and everyone's destiny is intertwined by fire. To pursue the truth, they deeply investigate, with clues pointing directly to the huge hidden dangers behind inferior building materials. Can they uncover the cause and effect, complete redemption, and guard life? The play pays tribute to firefighting heroes and deeply interprets the safety concept of "prevention is greater than extinguishment".