Traveling dentist O'Connell traverses South America on his motorcycle for the 'Eversmile' foundation of New Jersey, in a fight not only against cavities, but also against fear, ignorance, indifference - and established antediluvian dentists. During a stop at a lonesome garage he meets Estella, who is supposed to marry a few days later. However she'd rather come with him - to meet a former boyfriend in another town, she says. Expecting problems, he refuses to take her, but she tricks him into it and then tries hard to convince him of her qualities and let her stay with him.

A robot named Bobtron wishes to obtain the sense of taste, which he believes to be the last step to becoming fully human. More importantly, with this new sense he would be able to show Tina, his human girlfriend, how much he loves her. For this, he asks inventor Dr. Roger to implant on him a "taste chip" that he obtained from another scientist, Dr. Mifune from Japan, but things don't go as planned!

The story of a pair of bumbling detectives Uruguayan undertaking the mission to go to the aid of an orphan and very rich heiress to Argentina. It will be very easy to deal with the thousand and one difficulties awaiting them on the road. Clashes with bandits plaguing the region and that will go back more than once, will not be the only danger.