An ailing cougar leads Tarzan and Jane to find a deadly mercury poisoning in the river, which will destroy all fish and animal life in the area unless they find the culprits.
Tarzan and the gang are moved by the plight of a man and his daughter whose plane has crash landed, and are shocked to find a shipment of cocaine in the cargo.
When Simon is visited by his tough, streetwise teenage godson from the Bronx, Tarzan takes the troubled youth under his wing and uses the jungle to change his attitude.
A famous fashion model and her photographer got to the jungle to shoot a layout, but their fur fashions offend Tarzan and Jane.
Roger Taft Sr. visits the jungle. Convinced that Jane and Roger have accomplished nothing of value, he decides to cut off their funding and take Roger home, until Tarzan intervenes.
Tarzan must save Jane from deadly poachers, when on an expedition to an ancient cave sight, she discovers a cache of elephant tusks destined for the ivory trade.
Jane's bodybuilding cousin plans to use steroids to win her next competition, as well as Tarzan's affection, until Tarzan teaches her the true meaning of self-respect.
When PCB-laden oil is found in the river, Tarzan, with help from Cheetah and Tantor, hunts for the culprit, and turns up a familiar enemy, former drug dealer Karl Hauser.
Tarzan rescues a mysterious young woman who crash lands in the jungle, but soon realizes that her true mission is to kill his beloved jungle friend Juma the lion.
Jane is homesick for her family and Paris as Christmas approaches. Tarzan tells her to go home for the holiday, and he will take care of his sick chimp friend. As Jane prepares to leave, the chimp dies, and she decides to stay with Tarzan.
Tarzan and Jane try to find a family for an orphaned lion cub; Roger teaches Cheetah to play chess; and Simon anticipates a large inheritance.
When Roger's bumbling ruins a critical experiment, he takes a desperate gamble to prove he's not a total failure, a gamble that could be his last, unless Tarzan can intercede in time.
Jane's former fiancé, handsome, rugged Jack Traverse, returns to regain her affections. Tarzan senses that Jack's real motive has nothing to do with romance.
Fulfilling a childhood promise, Tarzan defends a priceless ancient shrine from the dangerous and greedy Cordell Winslow.
An evil rhino poacher Tarzan sent to prison escapes, and vowing revenge, kidnaps Roger and Simon, and sets out to kill Tarzan.
When Jane is bitten by a deadly spider, Tarzan and Cheetah, racing against time, undertake a dangerous journey to find the one man that can provide the antidote.
A retired school teacher, searching for alien beings he believes will save the earth, becomes convinced that Tarzan is one of them.
Former "Tarzan" Ron Ely guest stars as a world famous bow hunter, who sets his sights on the most noble, and most challenging prey in the jungle...Tarzan!
Suffering from recurring nightmares of the plane crash that killed his parents and left him in the jungle, Tarzan returns to the crash site to make peace with his past.
Tarzan must intercede to prevent a tragedy when Cheetah runs away from home, leaving Tantor the elephant heartbroken, and leading Roger to risk his life to reunite the two jungle friends.
Photographer Blake Evans returns to the jungle with romantic intentions towards Jane, but the ferret he gives her carries a deadly virus that Tarzan must stop before it threatens the other animals.
Tarzan braves a raging jungle monsoon and turns up an unwelcome visitor seeking shelter: adventurer Jack Traverse, who has returned to the jungle to capture a rare panther cub.
Tarzan and Jane brave deadly pesticides to save rare goshawks from extinction, and gain a deeper appreciation for each other along the way.
Jane accepts an incredible offer from Roger Taft, Sr., but it means leaving the jungle forever, a prospect that elicits a surprising reaction from Tarzan---and from Jane.
Roger exaggerates his heroism in a manuscript about his jungle adventures, prompting the gang to remember the many times that Tarzan, the real hero, saved them from certain disaster.