Couldn't find a thread like this, so might as well make one.
Anyways, the Christmas special description.
Marvel’s Ultimate Spider-Man: Web-Warriors “Nightmare on Christmas”
(8:30 PM – 9:00 PM ET/PT)
Spider-Man sees what the world would be like without him when Nightmare takes the web-slinger on a journey through his past, present, and future. Mark Hamill (“Star Wars” films) guest stars as Nightmare.