A phantom thief named Rusty Nail sends a letter to a mansion, saying they're going to steal their treasure. The Mikuni Detective Agency is called to protect the treasure, but are they up to this challenge?
Wh-Wh-Wh-Why?!
W-w-w-warum?!
¡¿Po-po-por qué?!
¡¿Po-po-por qué?!
Pou… pourquoi ?
Por quê?!