Jim Phe lps is t he new leader  of the Impos sible M issions Force,  with no expla nation,  or even refer ence made, about the dep arture of  predeces sor Dan  Briggs. First up f or Phel ps is a miss ion inv olving th e drug trade . Cresn ik and Walters have cornere d the heroin m arket and sell it at a hand some profit t o gangs ar ound the wor ld. Phelps d evises a n operati on which will drive a  wedge betw een the he roin dealers an d their cust omers.！