Desperate to gain access to the Ion Cortex after the failed kidnapping of Jason Burr, Lady Shiva sends one of her specialized agents to steal the information directly from Burr’s mind: a wall-crawling, half-computer assassin named Cypher. Batman and Katana try to stop Cypher, but Katana gets herself captured. Now, Batman must find a way to take down Cypher while he is in control of both Burr and Katana.