Brennan Huff and Dale Doback might be grown men. But that doesn't stop them from living at home and turning into jealous, competitive stepbrothers when their single parents marry. Brennan's constant competition with Dale strains his mom's marriage to Dale's dad, leaving everyone to wonder whether they'll ever see eye to eye.

Will Ferrell,John C. Reilly,Mary Steenburgen,Richard Jenkins,Kathryn Hahn,Andrea Savage,Adam Scott,Danielle Schneider,Lurie Poston,Elizabeth Yozamp,Logan Manus,Travis T. Flory,Lili Rose McKay,Shira Piven,Seth Morris,Wayne Federman,Maria Quiban,Gillian Vigman,Brian Huskey,Adam McKay,Seth Rogen,Chris Henchy,Mary Catherine Hamelin,Erica Vittina Phillips,Phil LaMarr,Rob Riggle,Ken Jeong,Horatio Sanz,Kyle Felts,Jake Szymanski,Matt Walsh,Krystal Ellsworth,Dmitri Schuyler-Linch,Bryce Hurless,Brent White,Ian Roberts,Don Abernathy,Amanda Lee Jacoby,Christopher Karl Johnson,Michelle Lenhardt,Tara Macken,Sandra Rosko,Henry Silva

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