Julia Jones (ALYSON HANNIGAN) is a young woman who just want to find the right guy and be loved, and doesn't want to end up like the kooky Old Cat Woman (BEVERLY POLCYN) who lives across the way and spends all of the time with her felines. Yet, Julia's large size and lack of refinement means she'll probably forever work as a waitress alongside her Japanese sister Betty (MARIE MATIKO) at the family restaurant run by her black dad Frank (EDDIE GRIFFIN) and Indian mother Linda (MEERA SIMHAN).
Frank thinks she should end up with the greasy Nicky (JUDAH FRIEDLANDER), but Julia would rather get hitched to the dreamy Brit, Grant (ADAM CAMPBELL), who she briefly sees in the restaurant. With nothing left to lose, Julia seeks the help of date doctor Hitch (TONY COX) who, after initially being reluctant, decides to give her a complete makeover. When he's done, Julia is suddenly fetchingly svelte and she quickly wins over Grant on a dating reality TV show.
Soon, the two are going to get married, so after he meets her parents and he takes her family to meet his -- Bernie (FRED WILLARD) and Roz Funkyerdoder (JENNIFER COOLIDGE) -- they're off to see wedding planner Jell-O (VALERY ORTIZ). Grant also anxiously awaits the arrival of his best mate, but "he" turns out to be a she in the form of the scantly clad beauty Andy (SOPHIE MONK) who he used to date.
From that point on, and as various gags from various romantic comedies and other Hollywood films pile up, Julia must decide how to proceed and whether she's really found her true love.