Set in NYC, this film stars Cary Grant as Johnny Case, a 30 y.o. businessman working at a “financial house.” While he takes a skiing holiday to Lake Placid, he meets Julia Seton (Nolan); the two fall in love (in ONLY 10 days). They get engaged!
It turns out that Julia comes from a VERY wealthy/influential family. Johnny is surprised and bemused, BUT then finds himself taken w/ Linda (Katharine Hepburn), Julia’s free-thinking/dramatic older sister and her little brother, Ned (Lew Ayres), a musically-gifted alcoholic. (Linda Seton was loosely based on Gertrude Sanford Legendre, a former débutante who left high society to become a big-game hunter and later spied for the OSS during WWII.)
There are a lot of humorous little episodes. I tried to get Father to let me take a nursing course at a hospital. Oh yes, and I almost got arrested trying to help some strikers over in Jersey. Well, how was I to know that Father was on the board of directors at the company? You see, Case, the trouble with me is I never could decide whether I wanted to be Joan of Arc, Florence Nightingale, or John L. Lewis. -Linda talks about her past
It turns out that Julia is NOT that different from her father; at some point you wonder WHAT Johnny saw in her in the first place! Her siblings are discontented with being under their father’s thumb. Mr. Seton is NOT a bad guy, BUT has strong feelings about how things should be done to keep the family on the up and up.
You’ve got no faith in Johnny, have you, Julia? His little dream may fall flat, you think. Well, so it may, what if it should? There’ll be another. Oh, I’ve got all the faith in the world in Johnny. Whatever he does is all right with me. If he wants to dream for a while, he can dream for a while, and if he wants to come back and sell peanuts, oh, how I’ll believe in those peanuts! -Linda explains, revealing her true feelings for Johnny
[Quoting an imaginary society column] ‘Miss Linda Seton – on New Year’s Eve – entertained a small group of Very Unimportant People.’ -Nick jokes
In the original play, Nick and Susan Potter are wealthy socialites. Due to the Depression, the plot was altered so that Johnny (“the common man”) would have more ordinary, down-to-earth friends. Johnny’s friends, the Potters, were intellectuals and funny- great combo. They added a LOT of fun to this film!
 Hepburn, clearly the star of this production, acts each scene with an emotion and charm that is almost unheard of in the mainstream cinema of the present. …I found myself becoming so endeared to her character that I probably would have been completely devastated if she didn’t get some sort of happiness in the end, probably one of the highest compliments that I can give to an actor’s performance… He [Grant] is such a fresh and passionate character…
 Cukor takes a lighthearted approach to this story, which keeps it upbeat and entertaining, and he laces it with warmth and humor that’ll give you some laughs and put a smile on your face. But beyond all that, Cukor shows some real insight into human nature and the ways of the world. And it makes this film timeless.
-Excerpts from IMDB reviews