Kicked out of their dam when their parents have another litter, Norb and Dag strike out on their own. Their search for a new place to live turns into a right struggle because Daggett rejects what their parents taught them and wants to build a new home HIS way.

Seeking to exploit the beaver's natural instinct to build dams when they hear running water, the government parachutes Norb and Dag into a flood zone. Soon the brothers find themselves facing a river with a mind of its own and no intention of backing down...

Envy rears its ugly head when Norb seemingly gets a better Arbor Day (beaver Christmas) present of a killer train set. Dag sets out to sabotage it when all he gets is an air freshener.

Dag attempts to give his brother a wake-up call when spicy midnight snacks and bad horror movies cause Norb to sleepwalk.

When Norbert and Daggett say the same thing at the same time, they play a game: the first one to speak gets a moogy-pinch. The boys spend the rest of the day trying to trick one another into speaking.

Daggett and Norbert learn how to mark territory with their scent glands. Their fraternal jealousy kicks off a marathon of territory claiming across the dam, the forest, and the entire country. The boys finally learn their lesson at the hands of some rather smelly lumberjacks.

Daggett and Norbert vie for their baby sisters' affection when the two girls are left in their care for the weekend. While self-proclaimed child care expert Dag maps out a detailed itinerary of ""fun"" stuff to do, Norb kicks back and lets them do what they want. Neither plan works, and pandemonium reigns.

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.

Norb tries to rescue Dag who is held captive in the dam by three singing river rats.