The Wrong Missy stars David Spade as a recently single man (his ex cheated on him), who goes on a blind date and meets up with Lauren Lapkus's character "Missy" who is a very loud, and obnoxious lady and someone he clearly has no interest in dating. After that first date they never speak again, but a few months later while traveling he end up running to another Missy (Melissa), and they really hit it off. They both like the same books, both don't drink and they both have the same backpack. However this Missy has to catch a flight and so she take his number and says she will text him later. A few days later he receives a text and they make plans for her to come on a work trip with him. However once he gets on the plan he realizes he's been texting "The Wrong Missy" the entire time and the crazy Missy shows up on the flight with him. From there all kinds of funny mishaps happen.
While, I can't say I loved this film, it was funny enough to keep me entertained. I think if you enjoy those "Adam Sandler" type films with lots of toilet humor, then you might enjoy this as well.