An odd but gentle man, Trevor, with a gift for calming agitated animals works as a dog warden in a neighbourhood under attack by a feral dog. When he subdues a German Shepherd dog that has allegedly bitten a child, there is local rejoicing that the wild dog is caught. But Trevor realizes that the dog cannot be the culprit and sets out to prove it. But Trevor's world is becoming increasingly strange as road signs and messages in newspapers seem to be warning him of bad things about to happen.