Randolph Smiley (Robin Williams) has it all. As the costumed star of the highest rated kid's show on TV, "Rainbow Randolph" has a Manhattan penthouse, a Times Square billboard featuring his beloved character, cars , boats, horses and all the indulgence that celebrity brings.
Until he gets caught by the Feds in an under-the-table bribe. Busted and instantly reviled, Randolph is a star no more.
Enter Sheldon Mopes (Edward Norton) and his alter-ego "Smoochy", a puffy, fuchsia rhinoceros. Smoochy is the perfect remedy for what ails the networks. Now it's Smoochy who's got the swanky penthouse, the Times Square billboard and the smooth-talking agent (Danny DeVito).
Sheldon soon learns that children's television is a dangerous world steeped in corruption, back-stabbing and violence with his biggest problem being Rainbow Randolph. Broke and homeless, Randolph seeks revenge on the Rhino that stole his job and his house; convinced the foam rubber carpetbagger is the face of evil sent by the devil to destroy him and he will not sleep until Smoochy takes a permanent dirt nap.