Taking Care of Business, or Filofax, as it was released in the UK, tells the story of convict and Chicago Cubs fan Jimmy Dworski (Belushi). Jimmy wins tickets to the world series. Unfortunately he still has a couple of days left to serve in prison and the warden won't let him leave and come back. With the help of the other prisoners, Jimmy sneaks out of prison to see the game. On the way, he finds the filofax of uptight yuppie advertising exec Spencer Barnes' (Grodin), which promises a reward for being found.
