The episodes used in the film are "Tarzan and the British Invasion", "Tarzan and the Volcanic Diamond Mine" and "Tarzan and the Flying Ace", the last three episodes of the show to be aired (but taking place much earlier in production order). An adventure game on the DVD is also based on the series. It resembles a multiple choice story, featuring many different characters from the TV series. Another gamebook example consists of the Give Yourself Goosebumps series.
The film makes use of a frame tale to present three self-contained "episodes" via flashback. Jane and Tarzan's first anniversary has arrived, and Jane is trying to find a suitable present for her husband, with the help of the elephant Tantor, and the gorilla Terk. When a party is suggested, the trio remember the disaster that occurred when three of Jane's friends arrive for a visit. As Jane considers a gift of jewelry, she is reminded of Tarzan's exploit with a pair of conniving diamond prospectors who take advantage of him and also trigger a volcanic reaction. Jane then decides on a night of dancing but changes her mind when she remembers how Bobby, one of her childhood friends, came to visit, only to be found out to be a treacherous spy to the Germans during World War I. Downhearted, Jane goes home without a present, only to find that Tarzan, wearing his fathers' suit; has thrown her a surprise party, he has also gotten her some jewelry and has a dance with her at the end.
- Michael T. Weiss as Tarzan
- Olivia d'Abo as Jane Porter
- April Winchell as Terk
- Jim Cummings as Tantor and Merkus
- John O'Hurley as Johannes Niels
- Jeff Bennett as Professor Archimedes Q. Porter and Robert "Bobby" Canler
- Alexis Denisof as Nigel Taylor
- Grey DeLisle as Greenly
- Nicollette Sheridan as Eleanor
- Tara Strong as Hazel
- René Auberjonois as Renard Dumont
- Frank Welker as Nuru & Sheeta