On a rainy night, a truck was forced to stop by the police. In the cab sat a woman covered in scars and exhausted, but when she got closer, she found that the other person was actually a man. There were hundreds of dogs in the man's car, and all kinds of strange situations forced the police to take the man back to the police station. The man called himself Doug (Caleb Landry Jones). In his opinion, dogs are like family members and have unparalleled trust in humans. He was born in a violent family. His father trained dogs for fun to fight. He was full of contempt for this weak and compassionate son, and even locked him in a dog cage for self-reflection. A bang cut off the last bond between father and son, and also made Doug embark on a road of no return with dogs. In the years that followed, he tasted the bitterness of the world. He once longed for love and tried to integrate into society. But in the end, he found that there was no place for him in this world. In the end, only this group of loyal dogs gave him the most solid support and courage...