Complete story — includes the ending
While looking through J.J.'s inventions, Rusty accidentally frees a swarm of superhuman nanobots that enter Dean. 21 deduces that the cave belonged to the vigilante Blue Morpho, who The Monarch realizes was his father. He attends a Guild event at Wide Wale's but is refused entry because he arrives in costume. Duplicating villain Copycat allows The Monarch to borrow a suit, but splits in two, drugs him, and steals his costume. He breaks into Rusty's penthouse and urinates on his furniture while simultaneously pointing this out to Dr. Mrs. The Monarch, leaving her enraged that The Monarch is seemingly illegally arching Rusty. Hank, now working as a pizza deliveryman, is called to deliver to Wide Wale, and realizes that his daughter Sirena is the woman with gills. He navigates around Wide Wale's aggressive henchman Rocco so he can ask her out, and she accepts, attracted to his risk-taking. Post-credits scene: Dean painfully urinates out the nanobots and learns that with their help, he passed his college entrance exam.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of The Venture Bros. episodes. HTML formatting and reference markers removed. · Content license