The gang visits the ruins of the Darrow family manor, as the original Mystery Inc. was looking into them. They become trapped inside, and a strange voice tests them with various traps. Velma realizes that the voice think they’re the original Mystery Inc., as the traps are designed for them. As the gang searches for the voice, they find a golden disc piece. The voice, revealed to be Danny Darrow, the last survivor of the Darrow family, violently chases them as he tries to retrieve his disk piece. An earthquake causes the house to start falling apart, and upon realizing the gang is not the original Mystery Inc., Danny lets them keep the piece, hoping they can use it better than he and his family could. The gang escapes while Danny dies with the ruins of his mansion.
