Tofu was designed to be the perfect companion — he learns a child's voice, follows him everywhere, and asks for almost nothing except a game of fetch. Then, during an ordinary game with numbers, Tofu does something no machine should be able to do: he solves a problem that quietly protects the world's most important secrets.

What should have been a private miracle becomes a global threat. Scientists want to understand it. Powerful people want to control it. Others will kill to get it. At the centre of the hunt is Aryan, an eight-year-old boy who has no idea that the toy he loves has become the most dangerous object on Earth.

Because the most frightening thing about Tofu is not what he can calculate. It is who he loves.

Good Boy is a techno-thriller about family, loyalty, and the terrifying possibility that the world's most powerful breakthrough might belong to the person least capable of understanding it.