Prince On Fire 1

Moments after the king and his son has had a joyful chat about the previous day's official ceremony of introducing to the kingdom it's heir apparent to the throne, the queen comes to the king's chamber to conspire against the prince, accusing him of impregnating one of the palace slaves which tantamount to an abomination. The king livid with anger summons the prince, and lambasts him without giving him a chance to defend himself. How will he exonerate himself from this heavy allegation?