An illegal biological weapon K-55 is stolen from a university lab. The university lab can't even call the police because the secret nature of the weapon. The school lab then receives a message stating that the entire country is now being held hostage and they must pay a ransom of 300 million yen.

Shippu Rondo

A police detective Shoukokuji Ryuuya from the first section of Metropolitan Police Department is tasked to investigate the murder case of a woman which takes place at a grand party held by a big-time actress but faces the hurdle of finding the true culprit among the large pool of suspects.