Thief Viliam, swindler Emília, and the unwitting Tobiáš are implicated in stealing St. Peter’s key. After dying and facing judgment at heaven’s gate, Saint Peter sends them back to earth with a strict deadline to recover the key or be damned. Their quest leads them to a castle where a kindly king and a beautiful princess await, but they must also outwit treacherous chancellors and foil their malicious schemes.