Plot: Two unemployed, 39 year old Los Angeles area slackers - Brennen Huff and Dale Doback - are brought together when Brennen's mom falls for and marries Dale's dad. As the two get used to living together, tensions between Brennen and Dale grow incredibly intense. However, at family gatherings, Brennen is always overshadowed by his wealthy, successful, and obnoxious brother Derek - who drives a luxury car, has a beautiful (but lonely) wife and two kids. As Brennan and Dale both quickly learn they share the same hatred for Derek, they quickly find out they both have more in common than once thought. They soon decide that they both have the ultimate business idea, combine Brennan's singing abilities with Dale's drumming abilities to form a rock and roll karaoke company. However, Dale's father's dream of sailing around the world hinders their plans, along with a series of incidents that constantly shoot themselves in the foot. Can they pull it off without driving each other completely crazy?
Alternative Plot: Brennan Huff (Will Ferrell) and Dale Doback (John C. Reilly) have one thing in common: they are both lazy, unemployed leeches who still live with their parents. When Brennan's mother and Dale's father marry and move in together, it turns the overgrown boys' world upside down. Their insane rivalry and narcissism pull the new family apart, forcing them to work together to reunite their parents.
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