A kind school teacher suddenly becomes heir to a large company on the condition she marries the owner's grandson. As she is interested in neither, they make a deal that if they manage to date for a full six months, he will inherit instead.

Two brothers, Kwang-Sik and Kwang-Tae, have very different attitudes toward women. Kwang-Sik is extremely shy and can't say a word to a woman. But Kwang-Tae is a playboy who just sleeps ...