The digital marketing plan aims to increase sales and awareness of low-calorie drinks. It targets health-conscious adults through social media posts, online TV ads, and a Pinterest contest promoting a "Buy One Get One 50% Off" deal. The plan's $26,000 budget covers advertising, promotions, and an agency to implement social media posts, search ads, and an online event. The key goals are growing revenue, awareness, customers, loyalty, and market share for low-calorie drinks.