Avanti!

A successful businessman, Wendell Armbruster Jr. (Jack Lemmon), travels to Italy to claim his father's body, only to discover that his father died alongside his longtime mistress. There, he meets Pamela Piggott (Juliet Mills), a traveler from London who also lost her mother in the same car accident. As they navigate the bureaucratic hurdles of Italian traditions and deal with a series of complications, including theft of the bodies and blackmail, Wendell and Pamela's initial animosity towards each other gives way to romance. Ultimately, they find a way to bury their parents together on Ischia, fulfilling their long commitment to each other.