From Europe to Algeria and back to the jungles of Waziri, the adventures of Tarzan continue as he battles his nemeses to save Jane from peril. In this sequel to Tarzan of the Apes, the aristocratic ape man has given up his quest for Jane’s hand in marriage, but his adventures have only just begun. On a ship back to Europe, he encounters Nikolas Rokoff and Alexis Paulvitch, two hardened criminals attempting to prey on other passengers. When Tarzan thwarts their scheme, the pair are determined to get their revenge. Tarzan evades their sabotage time and again, first in Europe and later in Algeria during a special assignment with the French Ministry of War. But while on a sea voyage to South Africa, Nikolas and Alexis manage to ambush Tarzan and throw him overboard, inadvertently sending him back to the jungles of his youth—and into another encounter with Jane Porter, who once again is in mortal danger.