"Benji" was originally a stray dog that ate at many houses. He liked a pair of siblings the most because they often played with him and fed him delicious food without telling his mother. One day, the siblings were kidnapped by bad guys. When his mother and the police were panicked and at a loss, the smart and brave "detective dog" Benji overcame the dangers and rescued the siblings in his own way, and also found the home he had always dreamed of. Benji's story reminds us that the pets around us may be the heroes who save humans.