The story takes place in a large supermarket. Among the goods displayed here, there is an ancient legend that one day, the god named "customer" will appear here and take you home. From then on, you will reach the peak of life and enjoy supreme glory. The biggest wish of sausage Frank (voiced by Seth Rogen) and his girlfriend hot dog bun Brenda (voiced by Kristen Wiig) is to be bought home by the same customer so that they can live the long-awaited "combined" life. However, a bottle of honey mustard (voiced by Danny McBride) that was once bought by a customer and then returned to the supermarket tells the truth of the incident, that is, there is no God at all, and there is no heaven. What awaits them is only cruel eating alive and separating flesh and blood. In order to verify the words of honey mustard, Frank found the mysterious tequila (voiced by Bill Hader). At the same time, Brenda, who fell off the shelf and rolled elsewhere due to an accident, was also looking for a way home with Bagel Sammy (voiced by Edward Norton) and Armenian pancake Lavasi (voiced by David Krumholtz) who had the same experience.