Bunny Basher's home warren is in great danger. Farmers and their pets prowl around the countryside, setting down snares to trap rabbits, and leaving dogs skulking around all the burrows. Most of the rabbits are incapable of fighting back, so Bunny Basher is the only hope of the warren. So he sets out to find four poisons with which to poison the farmer, his wife, his dog and his cat. Bunny must search in warrens, houses, farmyards, vinyards, factories and storage chambers to find the poisons.