Schwarz Dohkai, a doctor of space engineering, is suddenly transported to the royal palace of another world. Guided by a mysterious voice, will he be able to break through the strict security and return to the original world?

Schwarz Dohkai, a doctor of space engineering, is suddenly transported to the royal palace of another world. Guided by a mysterious voice, will he be able to break through the strict security and return to the original world?