The story features Batman in Gotham City and Tokyo , locating the source of a deadly drug. This drug enables the users to live the life of their dreams for a day, by forcing the user to shapeshift into the person they desire to be. After the day ends, the drug kills the user by draining him or her of there lifeforce. Most of the users in Gotham turned into literal copies of several Batman villains. Batman suspected they were not the real thing after they seemed to sport twisted forms of their regular traits. Realizing a larger force is at work, Batman follows the trail of the chemical to Tokyo.