Yun Se is engaged with Hee Jeong by his parents. One day he came to know a beautiful woman Ji In and shares true love with her, defying his parents' opposition. Also Ji In, an orphan and lives with a missionary, feels joy of living through Yun Se. But she strays around because of opposition of Yun Se's mother. Yun Se desperately looks for her who is hospitalized in a mental institution. He takes care of her to recover from the trouble with his endless devotion and love.