Michio must raise the required funds within five days in order to purchase Roxanne from Alan's mansion. Like everyone else, Michio hunts monsters in the labyrinth and gathers items. However, even with Michio's skills, he won't make enough money in time. An anxious Michio recalls Alan telling him about a way to earn a large amount of money in a short period of time.

Michio enters the labyrinth with Roxanne and learns more about the world. He realizes the actions he'd been taking based on assumptions have been terribly inefficient. With the knowledge he learned from Roxanne, common video game strategy, and skill settings, Michio develops a method to efficiently make money.