Yet to fulfill their rock and roll destiny, the now middle aged best friends Bill and Ted set out on a new adventure when a visitor from the future warns them that only their song can save life as we know it. Along the way, they will be helped by their daughters, a new batch of historical figures, and a few music legends — to seek the song that will set their world right and bring harmony in the universe.

Recovering from a heartbreaking divorce, independent filmmaker and son-of-an-Italian-Prince Tao Ruspoli takes to the road to talk to his relatives, advice columnists, psychologists, historians, anthropologists, artists, philosophers, sex workers, sex therapists, and ordinary couples about love, sex & monogamy in our culture. What he discovers about his very unconventional family, and about the history and psychology of love and marriage leads him to question the ideal of monogamy, and the traditional family values that go with it.