The legend of Tarzan

What if Tarzan had a sister named Tarzana.

John and Freya Clayton have been be raised by an ape, and were known by the name Tarzan and Tarzana, but eventually left Africa and for their parents' home in England. John Clayton is married with Jane Clayton and the siblings are fully adapted to the life in London. The two are invited by King Leopold from Belgian to visit Africa but they refuses. However the American Dr. George Washington Williams convinces him and his sister to go since he wants to prove that there is slavery in the Belgian lands. Jane also goes with them and out of the blue, the village where they are lodged is attacked by the mercenaries commanded by the evil Leon Rom that works to Leopold. He wants to capture Tarzan and his sister to deliver then to Chief Mbonga, who is seeking revenge since Tarzan has killed his only son. In return, Rom will receive a chest of diamonds that Rom will use to pay mercenaries to invade Congo. However Washington saves John and Freya and Rom kidnaps Jane, expecting to be followed by Tarzan that crosses the jungle with Washington and his sister to rescue Jane. Will they succeed in their journey and stop Rom's plans?

I do not own the movie.