On the opposite side of the spectrum is the beautiful Ha-mi (Han Ji-hye), a meek university student looking for true love, but never seeming to find it.

As is typical in this kind of film, the two meet purely by chance: Ha-mi accidentally text messages Young-bin before literally bumping into him.

Ha-mi, feeling that their fortuitous meeting is a sign that they might be destined for one another, decides to pal around with Young-bin and see if there's any chemistry between them.

The thing is, Chae-young is a professional dating consultant and a strong subscriber to blood type personality theory.

But while Chae-young predicts impending doom, the happy couple try to give love a shot, ignoring their supposed blood type incompatibility.