Batman is following an assassin's blood trail to track Ra's al Ghul when three more assassins ambush him. Robin steps in at the critical moment, flooring them with his Bo Staff. Batman is unsatisfied — he insists he had it handled. Alfred sent Robin with one task: take Batman's Titan-contaminated blood sample for analysis and check hospitals and emergency rooms for Joker's infected donations. Robin wants to stay and help in Arkham City. Batman orders him back to Gotham and hands him a Line Launcher. Robin makes clear he will be available regardless.