‘Game of Thrones’ Kit Harington Stars in New HBO Comedy ‘7 Days In Hell’ With Andy Samberg from ‘Brooklyn Nine-Nine’ (WATCH VIDEO)

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It’s Jon Snow versus Jake Peralta.

Fresh off his stint on “Game of Thrones,” Kit Harington will be seen next in the HBO mockumentary “7 Days in Hell” with “Brooklyn Nine Nine’s” Andy Samberg. The feature will be airing on the cable network on July 11, but it will be available for early streaming on HBO Go a few days earlier.

The mockumentary follows Samberg as Aaron Williams, a hot-headed tennis superstar who has a seven-day face off with Charles Poole (Harington) who is regarded as a tennis royalty.

The film also presents Williams as Serena Williams’ “adopted brother.” The tennis star actually appears as herself in the production. “You know, a rich white family gets a black kid makes him play football? Well we flipped it. See, my dad took a white kid and made him play tennis,” says Serena in the teaser, which you can watch below.

Williams and Poole are portrayed as complete opposites, who got into tennis in totally different paths, and as the teasers will reveal, their match will be tensed and bizarre.

The HBO movie, which will run for 45 minutes, will also have special appearances by Will Forte, Fred Armisen, Michael Sheen, June Squibb, Karen Gillan, and Lena Dunham.  It is based on an actual tennis match that took 3 days to finish.

Take a look at “7 Days in Hell” below: