Graf Duckula wird zu einer Testamentseröffnung eingeladen. Sein Urgroßonkel vermacht sein Vermögen demjenigen, der seine Ermordung aufklärt. Alle Verwandten legen los.
Duckula travels to England to hear the will of the Duke of Mallardborough. When it is revealed that the Duke was murdered, many different suspects are interrogated. The investigation begins to focus on Duckula, who is coerced into confessing. He is put on trial and, just before the verdict is announced, the Duke appears, alive, and states that his death was a hoax.
Pátula viaja a Inglaterra para oír el testamento del Duque de Mallardborough. Cuando se revela que el Duque fue asesinado, se despiertan numerosas sospechas. La investigación comienza a centrarse en Pátula, quien es enviado a la corte y obligado a confesar.
