While reporting on a Tijuana animal shelter, journalist Bettina Blazak falls in love with one of her story's subjects, an adorable Mexican street dog who is being treated for a mysterious gunshot wound. Bettina impulsively adopts the dog, who she names Felix after the veterinarian who saved him. In investigating Felix's past, Bettina discovers that his life is nothing like what she assumed. For one thing, he's not a Mexican street dog at all. A former DEA drug-sniffing dog, Felix has led a very colorful, dangerous, and profitable life. With Bettina's story going viral, some interesting people are looking for Felix, making him a target, again. Bettina soon finds herself drawn into a deadly criminal underworld from which she and her beloved dog may not return.