A claymation version of the character Rick Sanchez sits in his lab holding a giant space gun.

All Summer wanted to do was have a fun Halloween sleepover.

Rick and Morty fans, Adult Swim’s new horror short « Summer’s Sleepover » is fittingly creepy stuff. Claymation filmmaker Lee Hardcastle is behind this trippy 10-minute special, which aired on HBO Max and Adult Swim’s YouTube channel over Halloween.

From the very first creepy mutterings, you know this is all going to go wrong. When Summer tries to have a nice time with her friends over the spookiest night of the year, an unexpected guest arrives.

It might be the weirdest, grossest, most unsettling thing you watch today, but then again, Rick and Morty Season 6 is here, and it’s what we’re all here for, right?