Clay-animated characters Wallace and his loyal dog, Gromit, set out to discover the mystery behind the garden sabotage that plagues their village and threatens the annual giant vegetable growing contest. Our two enterprising chums are cashing in with their humane pest-control outfit, "Anti-Pesto." With only days to go before the annual Giant Vegetable Competition, business is booming, but Wallace & Gromit are finding out that running a "humane" pest control outfit has its drawbacks as their West Wallaby Street home fills to the brim with captive rabbits. Suddenly, a huge, mysterious, veg-ravaging "beast" begins attacking the town's sacred vegetable plots at night, competition hostess Lady Tottington commissions Anti-Pesto to catch the beast and save the day. Lying in wait, however, is Victor Quartermaine, Lady Tottington's snobby suitor, who'd rather shoot the beast and secure the position of local hero and win Lady Tottingon's hand in marriage. With the fate of the vegetable competition in the balance, Lady Tottington is eventually forced to allow Victor to hunt down the vegetable chomping marauder. Little does she know that Victor's real intent could have dire consequences for her ...and our two heroes.