A lonely mans life is changed when a big white dog enters his world. Juan Villegas loses his job at a petrol station and ends up taking on odd jobs. One customer pays him not with cash but with Bombon: a large, white, ferocious-looking dog that is meek and accommodating. Villegas learns that the animal has the pedigree to win international shows, as well as becomes a breeding attraction, but Bombon would rather share his bitches berth than satisfy their lust.