The Road to Hong Kong

The Road to Hong Kong is a 1962 British comedy film directed by Norman Panama and starring Bing Crosby, Bob Hope, as well as Joan Collins, with a cameo featuring Dorothy Lamour. This was the last in the longrunning Road to series and the only one not produced by Paramount Pictures, though references to the others in the series are made in the film and shown in Maurice Binders opening title sequence.

Harry Turner and Chester Babcock are defrauding people in Calcutta by selling a Doityourself interplanetary flight kit that ends up injuring Chester, giving him amnesia. An Indian doctor Peter Sellers says the only way for Chesters amnesia to be cured is through help from monks in a lamasery in Tibet.At the airport, Chester mistakenly picks up a suitcase with a marking designed to be a point of contact between agents of a SPECTREtype spy organization called The Third Echelon. Diane, a Third Echelon secret agent, is supposed to give plans of a Russian rocket fuel stolen by the Third Echelon to the man with the suitcase, who will be taking them to headquarters in Hong Kong. She mistakenly thinks Chester is the contact. ........

Source: Wikipedia