Diffusion 7 août 2004
Dr. Venture, his teen sons Hank and Dean, and their bodyguard Brock head to New York to unveil Dr. Venture's new invention. They are pursued by a ninja intent on acquiring the device.
It's Christmas and the Ventures are having their annual party. But the festivities are interrupted by the Dean who accidentally summons a Christmas demon, and the Monarch who plans to blow up the Venture home.