Brother Bear ends up waking up on the wrong side of the bed and takes it out on Sister Bear. Then they both start to go through a series of arguments and fights.
Papa, Brother, and Sister Bear are skeptical when a skunk moves into the dilapidated burrow, but Mama Bear insists the Berenstain Bear family help the skunk fix up his new home.
Sister's noisy sixth birthday party is considered, "Too Much Birthday", and her sympathetic parents help her realize the true importance of having a birthday.