Voldemort's power grows as Harry, Ron, and Hermione search for Horcruxes to defeat him. They find love and finish Dumbledore's work, though there is little hope. The films target 11-year-olds and families through genres like fantasy and coming-of-age. Merchandise, social media, TV ads, and public displays effectively promote the films to teenagers through relatable items and common platforms. Meetings and interviews further excite young fans.