The Name of the Operation Is Chuushingura

The chief of police is reprimanded for his laissez-faire attitude toward Lupin, and dismissed from his post after assaulting the Prime Minister. Things having come to that point, the only way to restore his loss of face is to arrest Lupin! While the 47 top police officers are assembling, a strange old man asks Lupin to dig up the treasure of Kira Koozukenosuke from underneath the police station. The time is naturally a snowscape, and how will the showdown with Zenigata, in battle costume, turn out?