A visitor from the future tells best friends Bill and Ted that one of their songs can save life as they know it and bring harmony to the universe.

Bill & Ted's excellent adventure: Interplanetary rulers from the 27th century send two teenaged boys, who should have been studying history instead of playing rock music, on a guided trip through time and history. Bill & Ted's bogus journey: When the evil De Nomolos dispatches robots to kill Bill & Ted, not only is the future of the universe at stake, but there's no way they can win the battle of the bands. Luckily, when they knock on death's door,...