To log in to Disney Plus with Apple TV, first, open the Disney Plus app on your Apple TV. Select "Log In" and note the code displayed on the screen. Using a computer or mobile device, visit disneyplus.com login/begin and enter the code. Follow the on-screen prompts to sign in with your Disney Plus account credentials. Once confirmed, your Apple TV will automatically log in to Disney Plus, granting you access to your favorite shows and movies. Enjoy streaming seamlessly on your Apple TV.