Sandro, a detective, finds his wife strangled. His girl-friend Tiffany, who works as photographer, makes a "Blow up" from a photo, what Sandro finds beside the victim.
Don Serafin has a complex: to all the beautiful women always seen with a beard. To remove the complex and try to cure him, his friends will lead to Biarritz.
Sam and Buddy, two highway robbers, join with Colonel Quint, a big crook, who sold his services to Morgan, the banker, in order to free Baby, the banker's daughter, abducted by Espartero and his killers gang.