In this hilarious romantic comedy, Molly Mahoney (Aubrey Dollar) is flying home to Chicago for her mom's wedding and tells her family she is bringing a "Mystery Man." When she discovers her Mystery Man has a Mystery Wife, she dumps him curbside. In shock, she runs into childhood friend Josh Shiffman (Shane McRae) who is flying to the same event. Molly cries until she falls asleep. While she is passed out, Josh gets a call from his parents and finds out his father, Max (Daniel J. Travanti) is dying and his only regret is he will never meet the woman his son will marry. Desperate to fulfill his dad's final wish, Josh says he has met that woman, close family friend Molly Mahoney! Josh convinces a reluctant Molly to play fiancée for a few days. As the lie grows, the two boisterous families begin to plan what is really a phony wedding and somewhere in the chaos Molly and Josh may actually be falling for each other.