I saw this movie about 5 years ago on netflix. It was a movie, in english, set in a neighborhood where a couple was inviting their friends over for lunch. The first big thing was someone brought a stranger on their first date to the party. Then a bomb goes off downtown and they’re told to seal the doors and windows, trapping them. Later, the couple who was late shows up but they don’t let them inside and they die on the doorstep. The movie wraps up with them all dying since the radiation leaked in. It was a dark comedy and focused on what it would be like to be invited to a strangers house and then dying surrounded by people you don’t know.