Gong Gi Tae is being forced into marriage by his parents. After an instance of mistaken identity, in which Ju Jang Mi -- Gi Tae's best friend's ex girlfriend -- is suspected to be Gi Tae's lover, he forces her into a fake relationship to stop his parent's from making him get married and to get revenge on Jang Mi's ex.
For a show that has a pretty typical storyline - fake relationships, hidden feelings, interfering parents - Marriage, Not Dating manages to set itself apart for one simple reason; it succeeds where so many other shows fail.
So while it has the zany, comedic overtones and the poignant moments that are a part of so many romantic comedies, the show never loses its heart and lets itself fall into melodrama.
There are misunderstandings, and interfering second leads that don't understand the word 'no'. There are the sudden personality turn arounds in the eleventh hour. But the main plot is always the main romance, the leads are consistent and there's no crazy noble idiocy from either of them. There's humour scattered throughout the entire run and almost everyone feels geniuine.
So while it does have some pit falls - the middle dragged a bit - for having an overall good storyline and great characters, this show is a win. And a treat to any romantic comedy fan.