This is a commercial for German supermarket chain Netto Marken-Discount featuring a bunch of cats shopping in a grocery store and reproducing a bunch of internet cat memes. It doesn't make any sense, but when it comes to commercials, you don't have to make sense, you just have to get people to remember the name of your product or business the next time they're shopping. In this case, wait -- what was the name of the store again? Better luck next time.
Keep going for the commercial.
Thanks to Mary, who wishes her cats were responsible enough to do her grocery shopping for her, even if they go overboard on the Fancy Feast.