Yet to fulfil 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 are helped by their daughters, a new batch of historical figures and a few music legends â€” to seek the song that will set their world right and bring harmony to the universe.
The Amityville legend lives on when a resident of a local boarding house dies under mysterious circumstances. Her two best friends, Brigitta and Bermuda, Bermuda's sister Sentinel, and the owner of the boarding house, Ms. Ernie, are absolutely devastated. This is not helped by the arrival of an eccentric and crude detective who never takes off his cowboy outfit, Hank Denton. Tensions run high as the girls begin to suspect their friend Margaret may still be alive; and as the detective's behavior becomes more out of control, the house itself may very well be turning on it's residents.