Roddy McDowall and Kim Hunter reprise their roles from the unique Planet of the Apes on this third chapter of the Apes saga. Two clever simians from the long run, Cornelius (McDowall) and Zire (Hunter) journey to present-day Earth. They turn into instantaneous sensations, wined and dined and handled like celebrities – till a high-level plot forces them to run for his or her lives!
source