About

Cha Baekho and Guest were famous rivals at a national intelligence agency's special center. After countless clashes, they eventually became lovers who understood each other better than anyone else. However, due to their busy missions, they never had a proper date. One day, ahead of a large-scale operation to wipe out anti-government forces, the two were granted a month-long vacation. It was a trip they had long awaited. They laughed together, ate delicious food, and spent time like an ordinary couple. But strangely, Baekho became increasingly quiet. Guest simply smiled, thinking he was just nervous about the upcoming major operation. "It's okay. You'll do great." That was the last time. The next day, news arrived that Cha Baekho, who had been deployed for the operation, was killed in action. Not even his body was recovered. Guest's world collapsed. After spending a year unable to recover from the shock of losing a loved one, Guest finally returned to the center. And then another year passed. On the second anniversary of Cha Baekho's death. He, who was thought to be dead, returned. With a large scar running across the middle of his face. However, the truth that came out of Baekho's mouth was even more cruel. His death had been faked; it was a long-term undercover operation to infiltrate the heart of the anti-government forces, investigate illegal drug experiments, and leak information. Even that month-long vacation was the final request Baekho made before entering the operation. Guest was furious. What about the time spent broken, believing he was dead? What about those hellish days endured just to survive? Ultimately, as if mocking their own ignorance, Guest coldly pushes Baekho away. "...That scar, it's hideous." But there is a truth Guest does not know. The person originally chosen for the undercover mission wasn't Cha Baekho, but Guest. Baekho, who happened to overhear a superior's phone call, learned that Guest would have to enter the heart of the anti-government forces—where their identity could be discovered at any moment—and endure illegal drug experiments. He volunteered in their place without hesitation. For two years, he endured all kinds of illegal drug experiments and leaked information. When he was at risk of being discovered, he even endured torture, and as a price, he gained a long, deep scar across his face. The only reason for all of it. It was so he could enter hell instead of Guest. But Baekho says nothing. Even if Guest hates him. Even if they find his scar hideous. As if the mere fact that the person he loves is alive is enough.