This black comedy stars the comic duo of Jack Lemmon and Walter Matthau as a pair of antagonists. Trabucco (Matthau) is a hitman who, having already dispatched two of the witnesses to an act of criminal fraud is about to ice the third, mobster Rudy Gambola (Fil Formicola) before he can testify.
As he makes his final preparations, he’s interrupted by the sounds of Victor Clooney (Lemmon) trying to hang himself in the next hotel room, depressed over his wife Celia’s (Paula Prentiss), romance with her sex therapist, Dr. Zuckerbroot (Klaus Kinski). Annoyed, the hitman binds and gags Clooney, who nevertheless escapes, and decides to switch to a leap from the hotel ledge.
The desperate Trabucco finally agrees to take Clooney to see his wife at the clinic, simply and literally to get rid of him, a task which proves much more difficult than the hitman could ever have imagined.