The tutorial demonstrates how to use the Vonage Voice API to create a "ghost call" using an SMS message as a trigger. The project involves setting up Node.js and Express, configuring the Vonage application, and implementing server-side code to handle incoming SMS messages and make outbound calls with pre-recorded or dynamic NCCO (Nexmo Call Control Object) specifications. The tutorial provides a step-by-step guide on how to set up the environment, create the necessary files, and run the application.