Though the original factory lies in the territory of the town, the headquarters have been delocalized in Contres, France The commune is part of historical Brittany, in the traditional country of the pays de Retz.

The term Chevesché is a deformation of chevecier-chef, which in ecclesiastical language used to designate the person who watched over the bedside of a church and, by extension, had custody of the treasury.

This religious dignitary, who collected the revenues of an abbey (in this case, that of Pornic), lived in a chiefdom (in french, chefferie, hence the chef in the name).

Occupation of the territory is attested to in the Neolithic, as evidenced by the discovery of the Gâtineaux promontory site and, a little further south, the Souchais menhir.

In the early 20th century, with the advent of paid vacations for workers, many city dwellers from Nantes or even Paris headed for the coast.

This new summer tourism led to the development of a number of seaside resorts, including Tharon-Plage, 2 km south of the center of the town, which continues to expand today.

At the end of the Second World War, when the Loire-Inférieure region was liberated in August 1944, Saint-Michel-Chef-Chef was among the territories still occupied by the Germans in the Saint-Nazaire pocket, stretching from the Vilaine estuary to Pornic.

It is home to the town hall, the main church and other services such as the post office, a media library, a small cinema, as well as a number of cafés and restaurants.

During the second world war, the beach town has been occupied by the German army and some fortifications were built, still visible today when going towards Le Cormier.

A few services and amenities are opened for residents and tourists: the neighborhood has a pharmacy, two bakeries, a post office annex and a small convenience store.

In the late 2010s, the sea front between the Ernest Chevrier avenue and the Comberge marina harbour has been remodeled to ensure better and safer mobility and access to the beach.