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A pair of former high school sweethearts whose love has never faltered looks forward to a life of marital bliss until, on the eve of the groom's Las Vegas bachelor party, the bride suddenly calls off the wedding with no explanation. Their once promising future together instantly destroyed for reasons unknown to the would-be groom, the pair soon boards an airplane bound for home to pick up the pieces of their fractured lives and attempt to surmise just where it was that everything began to fall apart. Jeremy Sisto and Rashida Jones star in an incisive romantic comedy that proves once and for all that you can never tell where love will lead you.