Are you saying the switch is broken? Those can be replaced in about 15 mins and cost very little. The wires in wall rarely break and if do that could be a very dangerous situation.
There are switches that literally don't go any fixture or outlets at all, there's not even a visible sign of a fixture being removed. I assume the fixture was removed sometime during buildings life.
Waiting for “yeah there is a circuit that trips the breaker even with nothing plugged in”