Baron Underbheit returns as the Venture Bros jet crashes in Underland. The Baron seeks revenge on Dr. Venture and attempts to marry Dean, who is dressed in a Princess Leia slave girl costume when they are captured.

Gargantuan 1 crashes and Col. Bud Manstrong survives and hailed as a national hero. He and the Ventures are then honored at the White House. But the ghost of Abraham Lincoln appears suspecting an attempt will be made to assassinate the President.