McDonald's competitive strategy plan aims to win back millennial customers, who now make up less than 50% of restaurant traffic. The plan proposes four key strategies - social activation, tech integration, social responsibility initiatives, and trend-focused sponsorships. These strategies include social media campaigns, mobile app rewards, charity donations, and sponsoring events like music festivals. The goal is for millennials to find their identities and values reflected in the McDonald's brand through these updated strategies, resulting in a 50% increase in millennial customer traffic across restaurants.