A famous author, Sabine Manning, has yet to finish her latest sex-themed novel and is on a European cruise with Merriman Dudley, her manager and lover. Her exasperated publisher Martine Randall, in an exchange of favors, asks adventurer Lawrence Colby to pursue her. Colby discovers that Kendall Flanagan, mistaken for Sabine, has been kidnapped.
Kendall's karate skills help her escape when Colby comes to her rescue. Colby learns that Sabine no longer wants to write about sex, so he urges her to finish the completed novel under a pseudonym. Kendall complicates matters by becoming involved in another gangster's crime, but Colby is ultimately able to get everything settled.
