For four centuries, a family of thieves stole money and priceless property, especially items that had originally been stolen illegally. The central theme is that anything and everything can be stolen, regardless of how well protected the item is. During those years, the thief was known by only one name: Mouse. In the latest iteration, a young college art teacher named Muon Sorata is the newest person to assume the name Mouse. He is surrounded by three highly devoted and attractive assistants who help him execute heists on art museums and landmark towers. The thieves possess the power and resources to steal entire buildings and transport structures out to sea without ever being caught. Mouse is also known for not abandoning those who serve him, even if it results in his own capture.