Wallace is a brilliant but oblivious inventor who lives with his faithful mute dog Gromit. One day, when the duo are hit with financial troubles, Wallace rents out Gromit's old room to a mysterious penguin, who Gromit has a strong distrust of. The penguin ends up moving Gromit out of Wallace's life, but Gromit finds out that the penguin is plotting a sinister diamond heist, and will use Wallace and his Techno-Trousers to pull it off. With Gromit framed for sheep-murder and on the run, he needs to turn to help from a small, smart sheep that the duo found escaping from a dangerous dog belonging to Wallace's girlfriend, who also must come to terms with her evil dog and save the human/dog pair.
