When writer's block derails the literary dreams of Olly Pickering, he has to move in with his friend Murray after losing all his money. Things start to look up when Olly's college pal James asks him to be the best man at his wedding. Prior to the nuptials, Olly is drawn to a woman whom he thinks is the bride's sister -- only she turns out to be the bride, Sarah. Can Murray, who dislikes James, help get Sarah and Olly together?

After standing in as best man for his longtime friend Carl Petersen, Randy Dupree loses his job, becomes a barfly and attaches himself to the newlywed couple almost permanently -- as their houseguest. But the longer Dupree camps out on their couch, the closer he gets to Carl's bride, Molly, leaving the frustrated groom wondering when his pal will be moving out.

Five years after their summer together in Barcelona, Xavier, William, Wendy, Martine and Isabelle reunite.

After his long-time girlfriend dumps him, a thirty-year-old record store owner seeks to understand why he is unlucky in love while recounting his "top five breakups of all time".

With high school a distant memory, Jim and Michelle are getting married — and in a hurry, since Jim's grandmother is sick and wants to see him walk down the aisle — prompting Stifler to throw the ultimate bachelor party. And Jim's dad is reliable as ever, doling out advice no one wants to hear.

Maggie and Julianne are ex-girlfriends who unexpectedly rekindle the spark during a hometown visit for the holidays. Are they meant to be? They'll have to navigate their feelings, the gossiping town, and ghosts of exes past to find out.

In 1970s Germany, Léopold, a 50-year-old businessman, picks up and seduces 20-year-old Franz, who swiftly moves into his apartment. The dynamic between them intensifies with the sudden arrival of their ex-girlfriends.

A young man begins to suspect that his ex-girlfriend, Glauren, has been having a secret affair with Hellboy, so he enlists his friends to help him discover the truth.

As bass guitarist for a garage-rock band, Scott Pilgrim has never had trouble getting a girlfriend; usually, the problem is getting rid of them. But when Ramona Flowers skates into his heart, he finds she has the most troublesome baggage of all: an army of ex-boyfriends who will stop at nothing to eliminate him from her list of suitors.

When he starts dating drop-dead gorgeous Molly, insecure airport security agent Kirk can't believe it. As his friends and family share their doubts about the relationship lasting, Kirk does everything he can to avoid losing Molly forever.

Man from small town comes to New York to be best man at an old friend's wedding. He mistakenly supposes that the girl and her family are after his friend's money, and almost wrecks their romance.

Hard-luck cabbie John Winger, directionless after being fired from his job and dumped by his girlfriend, enlists in the U.S. Army with his close pal, Russell Ziskey. After his barely satisfactory performance in basic training, the irreverent Winger emerges as the figurehead for a ragtag band of misfits. However, his hijinks threaten to cause an international scandal when he inadvertently commandeers a military assault vehicle behind enemy lines.