On to the creepiness...So Marky Mark lands on the aforementioned planet, apes are running the show, blah blah blah. He's captured, but one ape feels sorry for him and helps him escape[Ari, played by Helena Bonham Carter]:
Soon after that, Marky Mark and the girl monkey find a group of rebel humans, along with the daughter of their leader, played by model/actress Estella Warren [She'll be the one in the middle]:
During the movie, there's a fair bit of sexual tension, but I'll let Roger Ebert explain from his review:
...wants to be all things to all men, and all apes...It's a social satire and then backs away from pushing that angle too far. It even has a weird intra-species romantic triangle in it.
It could have supported, or attacked, the animal rights movement. It could have dealt with the intriguing question of whether a man and a gorilla having sex is open-mindedness, or bestiality (and, if bestiality, in both directions?).
Sure, Corpse Bride may have been about marrying dead people, but at least they were all the same species.