AceShowbiz - Jennifer Garner may be having a "not fun" time in the first-look teaser trailer for her upcoming HBO comedy "Camping". The 45-second footage teases the magical weekend trip that Jennifer's character Kathryn embarks on in order to celebrate her husband's Walt (David Tennant) 45th birthday.

The trailer opens with Kathryn gathering people's attention during what seems like a lunch at a camping ground. She later can be seen visiting their neighbors to invite them to Walt's 45th birthday soiree. While it's supposed to be a fun weekend, something seemingly annoys Kathryn as she says, "You know what? It may not be fun. And it may not be any fun at all."

The teaser continues to glimpse some bizzarre things that happen during the camping, including someone falling off a tree, two ladies throwing birthday cake at each other, and Kathryn shouting her lungs out, "Where the f**k are we?!"

Co-written by Lena Dunham and Jenni Konner, "Camping" revolves around Walt, whose 45th birthday was supposed to be a delightful weekend back to nature, at least according to his obsessively organized and aggressively controlling wife Kathryn. But when the camping trip gathers Kathryn's meek sister, holier than thou ex-best friend and a free-spirited Tagalong in one place, it becomes a weekend of tested marriages and woman-on-woman crime that won’t soon be forgotten. Plus, bears.

Also starring on the upcoming series are Janicza Bravo, Arturo Del Puerto, Brett Gelman and Juliette Lewis. Meanwhile, Bridhet Everett recurs.

In addition to writing the script, Konner serves as showrunner as well as executive produces alongside Dunham and John Riggi. It is based on a British series created by Julia Davis and produced by Baby Cow Productions.

"Camping" is set to premiere on Sunday, October 14 on HBO.