Buddy is a ghost detective dog who can walk through walls and solve mysteries invisible to humans. When his human family moves to a new house, Buddy discovers another ghost boy named Timmy who is lost and can't remember how he became a ghost. Buddy uses his detective skills to uncover clues about Timmy's past while navigating the challenges of his own new spectral home. This heartwarming mystery combines friendship, problem-solving, and a touch of supernatural fun.