Looking for a fast way to earn dough, Wallace decides to make it. Armed with a batch of ovens, an army of robotic kneading arms, and an old-fashioned windmill, Wallace and Gromit start 'Top Bun,' their new bread-baking business. When bakers suddenly start disappearing, Gromit realizes that his master is in danger as he follows a twisting, turning trail of crumbs to solve a murder mystery.