Three arias from Antonín Dvořák´s fairytale opera Rusalka turned in to a movie, sung by Gabriela Beňačková (Rusalka), Libuše Márová (Witch), René Tuček (Hunter).
In the dead of night, a few hours after Mozart's death, the usual suspects are summoned to Mozart's room by Count Pergen, head of the secret police, who considered Mozart a potential revolutionary. Over the corpse, he interrogates them, trying to discover the true cause and significance of Mozart's demise.