Set in Baroque France, a scheming widow and her lover make a bet regarding the corruption of a recently married woman. The lover, Valmont, bets that he can seduce her, even though she is an honorable woman. If he wins, he can have his lover to do as he will. However, in the process of seducing the married woman, Valmont falls in love.

A 34 year old single woman, Nancy, hung-over again, exhausted by the endless fruitless set ups by her friends, traveling across London to toast another 10 years of her parent's successful happy magical marriage runs in with a 40 year old divorcee, Jack, who mistakes her for his 24 year old blind date. Nancy, deciding to go with it, happens to hop on the most chaotic yet hilarious journey of her life which neither of them will ever forget.