Engage the Witch Hunter! A Remedial Lesson in the Graveyard?

Maka and Soul Eater are discussing the rumors of their teacher, Sid Barett, who was stabbed in the head, becoming a zombie and preying upon the students when Maka's father comes in. As the temporary teacher replacement, he informs Maka and Soul that Shinigami wants to see them. Upon reporting to Shinigami's room, they meet up with Black Star and Tsubaki who were also called there. Shinigami tells them that because they failed to collect any souls, they would have to complete an "extra lesson". They are to find and stop Sid and the person who turned him into a zombie. They go to the cemetery, and Sid attacks them, wielding his own gravestone as a weapon. Maka and Soul attempt their Soul Resonance - "Witch Hunt" but are unable to control it properly and fail in dealing any damage. Black Star captures Sid with Tsubaki's chain, and it is revealed that Shinigami knows that the one who made Sid a zombie was Death Scythe's first partner before he worked with Maka's mother, Dr. Franken Stein.