At the wedding of Dr. Ben Stein, a series of emotional epiphanies lead to an amazing set of marriage proposals. King Chicken proposes to Bernice. Cornfed proposes to Beverly. Duckman proposes to his new love, King Chicken's ex Honey. After many arguments between the principles, Duckman says he will make all the arrangements, thereby letting everyone blame him. Despite his arrangements, the ceremony goes off with the appropriate hitches, except that Duckman finds out something that Cornfed forgot to tell him.
Cornfed undergoes analysis and relates this tale about Duckman seeing the ghost of his uncle who says that Duckman's father was murdered by King Chicken. Duckman hangs with Bernice and King Chicken while pretending to be crazy. Cornfed realizes that Duckman is living out the plot of ""Hamlet,"" that will eventually lead to Duckman's death.
Mambo is caught with a cigarette in his mouth; Bernice takes action in Congress. A tobacco company CEO invites her and the family to enjoy the hospitality of the tobacco industry. When Bernice won't change her position, they are put to work picking tobacco. Rescue seems hopeless, until Agnes Delrooney, reveals that she has been hiding out as Grandma-ma all this time. She makes an escape, with Duckman handcuffed to her.
Duckman sells his identity to the Variecom corporation for $1000, which he immediately spends. Unable to use his own name or image, he is left penniless. He even tries to become a Duckman impersonator, until he is ""downsized."" Then he conceives a plan to get his self-respect and identity back. Meanwhile, Cornfed leaves to rejoin the 80's band A Flock of Seagulls.
The family goes on a dream holiday camping trip. At the park, they run into Fluffy and Uranus who are also on holiday. However, Duckman quickly puts them to work and gets himself banished from the campground. He takes Fluffy, Uranus and Cornfed with him off into the woods, but bees sting the accompanying trio. Cornfed's head swells and an allergic reaction causes Fluffy and Uranus to grow to gigantic proportions and become homicidal. Hearing Duckman's screams, Beverly and a reluctant Bernice go to the rescue leaving entertainer Jim Bailey keeps the boys and Grandma-ma entertained.
Cornfed invites Beverly to join him on a trip to his Aunt's catfish ranch. Duckman, jealous of Cornfed's interest in Bev, tags along for the ride. After getting the ranch hands fired, Duckman and the gang must help the foreman, Big Jack McBastard, on the big catfish drive to Texas. On part of their drive involves crossing ""Hell's Toilet,"" where ""the days are so hot they can boil your brain and the nights are colder than David Caruso's film career."" After Duckman accidentally kills Big Jack, they are on their own.
Duckman needs a new kidney. To get one requires a donation from a blood relative. He searches for his father, who he thought was cryogenically frozen. Instead he discovers that the man he thought was his father, wasn't. Using the power of the Microsoft Network (Blatant Plug!), the twins and Cornfed find where dad is currently living. Duckman and Cornfed travel there, only to find that his is a paranoid schizophrenic who's formed his own country.
Duckman inherits a minor league baseball team as the dying wish of the owner who is trying to keep the team from hands of a banker. To boost attendance he stages a series of stunts, that humiliate and scare the players into quitting. He ""hires"" nine super-models to take their place and they are an instant success. Cornfed teaches them the fundamentals of baseball and they become a great team. The banker institutes a scheme to prevent the supermodels from winning the big game and Cornfed discovers his other scheme on the Internet in the newsgroup alt.villians.greedy-schemes.
Duckman and Cornfed become plumbers and their first job takes them to a society gathering in a mansion. While not doing his job, Duckman discovers that the cursed ""Sharon Stone"" is missing; he and Cornfed try to recover the diamond before the hostess discovers the theft. After the diamond is revealed to be missing, its curse comes into play and traps them in the mansion.
Duckman and the gang travel to San Francisco to attend Dickcon 97. He thinks he is being honored with an ""achievement"" award. When he gets there, he encounters an old rival from detective school. The rival is running the event and takes every opportunity to humiliate him. One of these methods involves an attempt to find a kidnapped Cornfed.
Duckman and Cornfed are hired to perform surveillance on a laboratory that is performing experiments on intelligence formulas. Cornfed accidentally swallows a ""Get Dumb"" formula, that falls in with the plans of the scientist who created it. If Cornfed gets cured, will Ajax lose his first true friend?
Duckman takes the family and the staff on a holiday to a real Indian reservation, with a casino. While there, a psychiatrist notices Duckman and the rest of the family's overall self-destructive behavior. She offers them treatment that involves a role-playing session that uncovers some of their real issues.
Cornfed along with Charles and Mambo prepare the ultimate aphrodisiac for Duckman to turn his love life around. They give him a limited amount of the potion, but he quickly replicates it in huge batches. Now he has more woman than he can deal with. Bernice discovers what is going on and demands that he stop. When the real thing occurs between Duckman and actress Courtney Thorne-Smith, no one believes him.
Duckman is imprisoned for killing Fluffy and Uranus, again. However, he is accidentally sent to a women's prison. A dream of his comes true! In fact Duckman fits in quite well and becomes the star attraction in the warden's side business, a dance ring. Everything's going great until Suzy comes along.
With the Father & Son Games coming up, Duckman looks for an alternative to competing with Ajax. He spots a more than adequate replacement in recording artist Coolio, who's returned to school to replace his high school diploma. Coolio does not compete with Duckman. Ajax competes with Duckman and even tho they don't win, it has made Duckman and Ajax's bond stronger.
Annoyed with the current state of the film industry, Duckman goes to Hollywood to demand his $7 back. Instead, he falls into the plot of a soon-to-be deposed studio executive, a man who's looking for a patsy to run the studio into the ground in hopes of saving his own job. Duckman becomes head of Paradox Pictures, where ""if it's a good movie its a Paradox"". He quickly begins running through the studio's money, signs a secretary to a 340 million dollar deal to star in a movie in her underpants. The deposed executive also arranges it so that Duckman manages to alienate the studio's three biggest action stars.