Questions are answered and truths are revealed. Learn how Henchman 21 copes with life without 24. See what happens when Brock and the Venture family are forced to part ways. Discover the final fate of H.E.L.P.eR. And all the while, the balance of the free world hangs in the hands of Dean Venture, who must kill Hitler.

The Monarch's abduction and ransom of Hank and Dean, part of his newest scheme to hurt Dr. Venture, inadvertently catches the attention of semi-retired super-hero Captain Sunshine. As Dr. Venture and The Monarch squabble over the rules of kidnapping, Hank must decide if he's ready to become Captain Sunshine's newest young and supple sidekick.

Hank, along with is friend, Dermott, start breaking all of the Venture Compound Rules in a bid to get his father's attention. But Dr. Venture is focused completely on Dean, who is taking his first steps in joining the family business as a Super Scientist. But someone else wants Dr. Venture's attention, too: A shadowy figure from Dr. Venture's past who is out to steal Dean's future.

In the aftermath of the death of his best friend, Henchman 21 has rededicated his life to become the most feared and skilled of all of the Monarch's Henchmen. But tonight, all bets are off as Henchman 21 begins the hunt for the murderer of Henchman 24. Alliances shift, secrets are revealed, and the Venture brothers are kidnapped. Again.

The Guild of Calamitous Intent comes under attack from an old foe with a new name, Revenge. Revenge's hunt for the all-powerful Orb brings the entire Guild to the front door of the Venture Compound, where they must face the combined might of Sgt. Hatred and Hank Venture.

Dr. Venture's therapy group, a collection of former Boy Adventurers (who have become failed adults), quickly fall back into their old habits when a mystery is literally dropped into their session. Meanwhile, Sgt. Hatred tries to overcome his own past when he's stuck in a movie theater crammed with kids. History is doomed to keep repeating itself if Hatred and Dr. Venture can't break their cycles.

The Orpheus Family is caught between the problems of their past and future as Dr. Orpheus must rescue the man he hates the most from Hell and Triana stands at the crossroads of her destiny.

The Monarch makes his move on Dr. Venture, just as he's distracted by problems with zoning regulations. But how does Monstroso play in and what are his ultimate plans? And how does it all relate to Brock Samson and the mystery of Sphinx?

The semi-season opener finds Dr. Venture semi-paralyzed in a trauma-induced coma. Sgt. Hatred and the boys recruit the medical minds of Conjectural Technologies for the mystery diagnosis. Meanwhile, the Monarch is over the moon about his latest gadget, but it's driving a hot wedge in his relationships with his wife and henchmen.

Hank and Dean finally graduate from their learning beds. But what's next? College? The army? Life on the outside sees the boys taking two very different career paths--and one of them leads straight to the Phantom Limb.

Somebody has been kidnapping the world's super-scientists and super-villains. But whom? And to what end? The OSI, SPHINX, The Guild of Calamitous Intent and The Revenge Society must put aside their differences and convene a secret think tank to solve a mystery of epic proportions.

With Dean off to New York for a summer internship, Hank is forced by his father to get a job. But when the budding entrepreneur dons a fabled fedora to become a private dick, a tangled mystery of sex, lies, and dirty secrets lands right in his lap.

Dean's summer internship in New York City turns deadly when he learns his new employer harbors a dark secret. Meanwhile, Doc's newfound love of show tunes makes him an easy target for the newly re-formed Revenge Society.

Dr. Venture isn't feeling himself lately...he's killing himself. Orpheus suspects it's an inside job and pries the Venture family from their touch football game to help him teach Doc the value of self-love.

The men of Conjectural Technologies learn that success comes with a price when Billy is kidnapped by the mysterious and extra-creepy investors behind their recent windfall. But who is behind the investors? SPHINX would like to know.

What's more frightening than a doll that wants to kill you with a broken bottle? What's more perilous than a car that has no brakes and is aimed at your torso? What brings more sleepless nights than the threat of chlymidia? The PROM! The Venture boys embrace societies most feared school dance in this hour long danger-pile. Will they live to look back at their rented suits with horror?