While pursuing Batman, Yin and Bennett find themselves drawn to Wayne Industries by a flock of bats. The pair quickly learn that they are connected to a project being worked upon by a scientist named Dr. Langstrom, who claims to Bruce that his work is to help cure those who are deaf. In reality, Langstrom, obsessed with the Batman, is actually developing a serum to mutate himself into a giant beast called “Man-Bat” that needs to feed on animal blood. With Man-Bat out of control, Batman must stop him before he changes from animals to humans for sustenance.
