At times, Stanley Corporation faces challenges when attempting to retrieve items upon the request of their clients, as the owners present obstacles that make it difficult to even communicate with the company. In such instances, they turn to Manjou Yuki for assistance; a senior in high school known for his 99% success rate on a popular internet puzzle site. He aids in tackling these intricate hurdles and finding unique solutions that cut through the complexity. Manjou Yuki's journey is one of thrilling high-risk challenges and games, as he helps Stanley Corporation overcome impossible tasks with his exceptional problem-solving skills.