Norb wrestles with bed biting, the common beaver childhood problem of chewing while asleep. While Dag maintains it's no big thing, cool guy Norb has a tough time dealing with it.

Norbert and Daggett pick up where they left off from their first "Up All Night" adventure to find that they have been up so long that they are years into the future. When they attempt to go to sleep, they discover that they're too tired to sleep and the mayhem begins all over again.

Dag concedes that he can't win an argument against Norb. Dejected at the pond, he stumbles upon Laverta Lutz, the "magical, mystical, Lady of the Lanes." Laverta grants Daggett a wish. His wish is to leave Norbert speechless in an argument. Laverta tells Daggett that "the argument is not over until the fat beaver sings." Not knowing exactly what that means, Dag rushes back to the dam to battle it out with Norb. Just as he had wished, he leaves Norbert speechles when in the throws of battle, Dag turns into a fat, over-sized beaver who sings his arguments like a professional lounge singer.

Norb drags Dag, who doesn't want to go, to a western theme park based around the legendary Kid Friendly, the grinning gunslinger who "kills ya with kindness" and folksy humor. When the Kid Friendly robot goes berserk, all that stands between Norb and a grinning demise is Dag's bad attitude.

Daggett and Norbert accompany Stump to his family reunion because Stump is a bit leery about meeting his woody kinfolk. Norb warns Dag not to embarrass him like he usually does. However, Norb gets a headache which causes him to become delirious and ends embarrassing Daggett in front of Stump's family, who aren't too happy about two wood-eating creatures being at their reunion.

When a ridiculously old tree lands on the Beavers' house, Dagget and Norbert start fighting over who gets first bite. But when they do take bites out of it, they become little kid versions of themselves! With nothing else good to eat in the house, Lil' Dag and Lil' Norb decide to go after the fallen tree's golden acorn.

Daggett becomes the unwitting foster dad for a lost baby mongoose.

After a Russian spacecraft crashes into the dam and makes a huge hole, Daggett and Norbert argue over who will fix the dam and clean up the mess. Norbert fails in his attempt to trick Daggett, so they assume each other's identity in a contest to see who can stand to be the other for the longest amount of time.

The two beavers have a staring contest that doesn't halt for anything... even the result of their long-awaited contest on TV.

The boys' typical squabbling falls by the wayside for a day of brotherly togetherness. They get caught up in building a huge sand castle and the fantasy world that grows with it.

The boys' typical squabbling falls by the wayside for a day of brotherly togetherness. They get caught up in building a huge sand castle and the fantasy world that grows with it.

The boys battle with a congested bird of prey who moves into the forest and bombards them with loogies.

An old home movie confirms Norb's suspicions that Dagg isn't his real brother. Soon, Norb is "reunited" with his brother Byron (who looks like a super-smart Norbert), while Dagg gets stuck with Byron's "brother" Randy (an incredibly stupid version of Dagget). But Norb grows tired of being the "dumb one" compared to Byron, and begins to wonder about the real meaning of brotherhood.

Much to Norb's annoyance, Dag takes his fascination with soccer too far eventually becoming a full-blown British soccer hooligan.

The Beavers have their own Y2K incident, when Dag's super sour punch shocks them into a brave, new fantasy world where the rules are theirs to create. True to their sibling rivalry, the boys soon make a mess of it.

Dagget and Norbert get tired of having to live together in the same room, so they decide to make their own rooms. The construction process soon turns into a frantic show of one-upmanship, with each beaver brother trying to make his room bigger and fancier.

Norbert wants to complete his celebrity curling iron collection by winning the prized Bo Donaldson curling iron. To do this, Norb attempts to sell chocolate to help poor, helpless squirrels who are nutless. When Norb enlists Dag as his salesman, things get crazy when Dag tries to sell one candy bar for $200, while Norb eats himself into a chocolate frenzy.

After a wizard mistakenly sends a doofy warrior to the Beaver's pond, the boys can't seem to get rid of him or his wielding sword.

A mysterious present arrives for the boys on the day before their birthday, allegedly from their mother. Soon the package is driving the Beavers crazy displaying all sorts of weird behavior and eventually chasing them all around the dam.

Through the mystical powers of The Lady Of The Lanes, Laverta Lutz, Dag gets to see what Norb and their friends lives would be like if he'd never been born. He's peeved to find out they'd all be much better off, and winds up making a mess of their new lives.

In this truck drivers tale, Norbert and Daggett become embroiled in a race to the Largest Pile of Toenails Attraction with none other than Truckee and his Big Renee.