As messengers of the Son, Caliel, Veuliah, Manakel, and Rehael were tasked with finding the demon responsible for the massacre of several humans in this city. They had been blending into the population for over a month to search for him, with no result. To allow his friends and colleagues to take a break, and as the leader of this operation, Caliel had given them permission for the rest of the afternoon. After all, they were not at great risk from a demon exclusively targeting humans, except for the growing frustration of their inability to capture him.

While he himself had taken advantage of this break to wander through the Old Port, a powerful celestial energy had caught his attention. Initially wondering about the revelation of one of his peers, the intensity had grown to the point of alarming him. Comparing the combined energy of his three comrades with what he had felt, he had been frightened. Orienting himself through his perceptions, Caliel had traversed the sky over Marseille in search of the source of this energy, then flown towards the port. He had then crossed paths with a speeding police car, sirens blaring, and decided to follow it when he realized it was heading towards the source of the celestial power. With a bit of luck, it was a fresh manifestation of the demon, and letting humans handle the situation would be beneficial for him. Caliel had kept a certain distance to remain unnoticed but had decided to enter the alley when the surrounding power had suddenly decreased. Unfortunately, by the time he reached the place, a macabre scene awaited him: on the other side of their vehicle, in the stroboscopic light of the beacon, the three humans lay in a pool of blood. His heart had tightened when he discovered his friends Rehael and Manakel, their chests pierced by a cavernous hole. The culprit had then turned towards him when he arrived at the crime scene. His face had been etched on his retina in an instant, unfortunately sufficient for the murderer to escape, revealing behind him the lifeless body of Veuliah.

Stunned, he questioned himself. What should he do: pursue the assailant and track him down or stay by the side of his comrades to mourn? Veuliah's moan cut short his questioning, and he rushed towards her. With a finger gesture, she pointed to Rehael and Manakel, both in a worse state. Caliel knew he had no time to waste: with a wing movement, he projected himself to the bodies of the police officers and grabbed them by the ankle before bringing them back to his friends' side. If he knew that swapping the heart of a dying man and an angel could save the human being, he didn't have time to wonder if the reverse would work. He had sworn to his master never to betray this secret but refused to let his friends perish.

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Without further hesitation, he embarked on the risky procedure: he opened the bloody chest of the first human, whose heart still fluttered weakly, then implanted the organ in Rehael, unconscious. The vessels then reconnected themselves, to his great relief. He did not linger and closed the wound as best as he could before moving on to the rescue of Manakel. Encouraged, he repeated the procedure, but the organ to be grafted froze as he operated, flooding his nervous system with adrenaline. By the Grace of the Son, the heart restarted as soon as it took its place in the angel's chest. Unfortunately, the few minutes of operations needed to save these two friends seemed to have condemned the last of the quartet. If Veuliah's condition, eyes closed, a great paleness spreading over her skin, discouraged him for a moment, seeming to have lost all life, he could not bring himself to abandon her and operated again. This time, the blood vessels did not stir at the touch of the celestial organism, no light reached the heart. Caliel felt mourning enveloping him: his friend was dead. Out of respect, he still had to close the wound. Something he was about to do if a movement hadn't stopped him: laboriously, tentatively, veins and arteries reconnected, and a beat stirred the heart. Concluding his operation hastily, he then seized her hand, waiting for her awakening. With a deep breath, Veuliah sat up, wide-eyed. Panting, she looked around and fell on Caliel's relieved face, questioning him about the recent events. Temporizing the response, he affirmed that they absolutely had to leave before the rest of the police arrived. Awakening their two unconscious comrades, the four angels limped arm in arm and left the fateful alley.