Hero fails to find a job in a major tour company. Eventually, he gets a job in a very small tour company on the verge of bankruptcy only containing four people with him. Their last hope is barely known southern island that no big tourist company holds. Hero and company president's daughter go there as guides alongside a tourist group of six women.

After receiving a mysterious letter, the protagonist—an ordinary young traveler—finds themselves swept into an unexpected adventure across various destinations. The letter hints at a hidden truth tied to their past, urging them to follow a trail of enigmatic clues scattered across different cities and landscapes.