With their unwavering passion for tacos, KKPP Foods once again embarks on a quest to find the ultimate taco place. Will Culinary Director Kyung Soo be able to find the best taco of his life there? On the second night of the trip, the members have their first expense settlement with the head office. After meticulously checking receipts, Auditor Woo Bin puts on sunglasses to gain the upper hand, but he soon encounters an unexpected problem. The next morning, the Teotihuacan hot-air balloon tour, one of CEO Kwang Soo's wishes, finally begins. While admiring the pyramids from the balloon, Kwang Soo suddenly flops down with a drawn face. What is wrong with him?