In this tutorial, a custom AI model is trained using IBM Watson to detect "hot dog" or "not hot dog" within a live camera view. The author uses augmented reality to display the result to the user and adds a live streaming component to make it more interactive. The prerequisites for this project include basic understanding of Swift, ARKit, CoreML, AIAgora Developer Account, and IBM Cloud Account with Watson Studio. The AI model is trained using images sourced from Google Images Download script and then integrated into an iOS app built using Xcode.