Once told they'd save the universe during a time-traveling adventure, 2 would-be rockers from San Dimas, California find themselves as middle-aged dads still trying to crank out a hit song and fulfill their destiny. 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.