dr. krellman want to save his son julio who die of heart disease . he decide a heart transplant with an ape will cure his son ( no i be not kid ) . he do the transplant and ( somehow ) his son change from a frail guy into a muscle bound man with a dime store mask that ( sort of ) resemble an ape . naturally he get out and kill men and tear the clothes of woman and wreaks havoc . this be all inter cut with the boring romance of police lt. arturo martinez and lady wrestler lucy ossorio . we also get pointless female wrestling sequence that add nothing to the plot . it all end by copy the end of king kong . this be ( obviously ) a pretty stupid movie . the plot make little sense and there the gratuitous female nudity ( a staple of any exploitation film ) and very graphic gore that look laughably fake ( except for the open heart transplant ) . still this do have merit . the whole cast take everything dead serious and actually aren not too bad a actor . also the dubbed in dialogue be ( for a film like this ) well do and interest with surprisingly good dubbing . also i saw an excellent dvd print with bright strong color ( which help ) . be not talk a classic here but an ok exploitation movie .