The plot follows a day of the life of Big Buck Bunny when he meets three bullying rodents, Frank (the leader of the rodents), Rinky and Gimera. The rodents amuse themselves by harassing helpless creatures of the forest by throwing fruits, nuts and rocks at them.

After the deaths of two of Bunny's favorite butterflies (one by an apple being fallen on it and the other by Frank smashing it with a rock) and an offensive attack on Bunny himself, Bunny sets aside his gentle nature and orchestrates a complex plan to avenge the two butterflies. Having set off traps, Bunny flicks off Rinky and Gimera before getting rid of Frank. Frank takes off a tree and glides. Having being distracted by the traps below, Frank crashes into a branch and starts to fall on the spikes below. He is saved by a branch which was held by Bunny. Frank tries to escape but however grabbed by Bunny. Later, Bunny is shown pleased at a butterfly flying past him while grabbing a rope on which Frank is attached as a kite.