When the sewers of Gotham start being inhabited by a killer man and crocodile Jim Gordon sends officer Patty Spivot and officer Johnathan Crane into the sewers to check it out leading to the death of officer Spivot. Meanwhile Bruce Wayne is being visited by Tommy Elliot his childhood friend about working together on a project involving Wayne Tech and Elliot Industries. After dinner Bruce sends Elliot off and goes back in to see on the news that officer Patty Spivot has been horribly murdered by a huge crocodile in the sewers. Bruce puts on his suit, puts on his belt, tells Alfred bye, and heads out to go investigate. While in the sewers Bruce notices a lot of chemicals and broken glass in the water and eventually finds a door that is being blocked by the giant crocodile. Bruce tries to sneak past but the crocodile wakes up and attacks Bruce. He manages to evade the attacks and stun the crocodile long enough to get through the door. Bruce finds a large flight of stairs which he finds leads to a lab where he finds documents and papers about genetic mutation and animal experimentation. Just then someone comes in and Bruce hides behind the bookshelf. He sees Hugo Strange the psychiatric specialist at the Belle Reve prison. Bruce manages to escape only to have to fight the crocodile again. He gets behind it and sticks a flash grenade to its back and runs. The episode ends with Bruce in his room on the computer looking into Hugo Strange.
