Today July 18th "Abbott and Costello in the Foreign Legion" opened in 1950. Bud Jones (Bud Abbott) and Lou Hotchkiss (Lou Costello) are wrestling promoters. Their star, Abdullah (Wee Willie Davis), no longer wishes to follow the script for their crooked matches, especially since he is supposed to lose his next match. Abdullah leaves America to return to his homeland, Algeria. The promoters' financiers, a syndicate that has lent them $5,000 to bring Abdullah to the States, are now requiring them to return the money or face the consequences. The two men follow Abdullah to Algeria in hopes of bringing him back.
Meanwhile, Abdullah's cousin, Sheik Hamud El Khalid (Douglass Dumbrille) and a crooked Foreign Legionnaire, Sergeant Axmann (Water Slezak), have been raiding a railroad construction site in order to extort "protection" money from the railroad company. When Bud and Lou arrive, they are mistaken for company spies, and the Sheik and Axmann attempt to murder them. As each attempt fails, the assassins' hatred for Bud and Lou intensifies, especially when Lou outbids the Sheik for six slave girls, one of whom, Nicole (Patricia Medina), is actually a French spy assigned to gain entry into the Sheik's camp. The boys are then chased, only to wind up hiding at the Foreign Legion headquarters, where Axmann convinces them to join.
Meanwhile, the Foreign Legion Commandant (Fred Nurney) suspects that there is a traitor among the Legionnaires, as the Sheik anticipates every one of the Legion's moves. The Commandant then grants Bud and Lou a pass into town where they meet up with Nicole. She informs them that they must search Axmann's room, but he catches them in the act. However, they are spared, only to end up at a Legionnaire desert camp. Just before the camp is ambushed by the Sheik's men, Bud and Lou wander off in search of a camel, and escape death. They are eventually captured, along with Nicole, who is put in Sheik Hamud's harem. The Shiek orders that one of his wrestlers execute them. The wrestler turns out to be Abdullah, who helps them escape. They head to Fort Apar, where they lure the Sheik's men, and blow it up. They are given awards by the Commandant and discharged from the Legion. (synapsis from Wikipedia)