The episode opens as a flashback to the end of season 1, beginning where Sebastian had leaned in to take Ciel's soul. However, just before he is able to feast, he is stopped by an unforeseen problem. The scene then cuts to the present, where the triplet servants continue their fight against Sebastian, in which they are defeated. Meanwhile back at the party, the ball is in full swing. Suddenly, Hannah arrives, carting a strange instrument (later called an armonica) that she plays for the guests. Though the guests are at first memorized, the tune starts to harm them physically. Outside, another fight erupts between the triplet servants and Sebastian. Hannah's music has taken control of the majority of the guests and have turned them into hostile, weapon-toting zombies. While Ranmao and Lau have corks in their ears, Agni assists Prince Soma and his friends to retain control of themselves while fending off the controlled guests. Eventually, the haunting tune reaches the outside, and after