A gunfighter after killing the ones responsible for his brother's death, joins by mistake a gang of smugglers

Bad Italian guy is buying all the land in a Mexican border town, for some reason, and his henchmen are killing anybody who interferes with him. Most of the town's men have moved to USA to escape him, so four comic-relief guys and a truckload of children take down the real estate gangsters, with a little help from two wrestlers.