Yoo-Jin (Joo Won) is a university student majoring in piano. He has a world famous pianist father, exceptional music talent and attractive appearance, but his one weakness is that he can't ride in an airplane or boat due to a childhood trauma. Because of his phobia, Yoo-Jin is unable to travel to Europe to learn conducting even though he badly wants to become a conductor.
One day, Yoo-Jin gets drunk and falls asleep on the doorstep of Nae-Il (Shim Eun-Kyung). She lives next door to Yoo-Jin. The next morning, he wakes up and finds himself in a room full of trash and he sees Nae-Il. Nae-Il falls in love with him and follows him around. Nae-Il is also a piano major and takes lessons from Professor Ahn Gun-Sung (Namgung Yeon). Yoo-Jin is soon assigned to take lessons from Professor Ahn Gun-Sung as well. His arrogance has led him to take lessons from Professor Ahn Gun-Sung rather than Professor Do Gang-Jae (Lee Byung-Joon) who is renown for instructing many famous pianists. Professor Ahn Gun-Sung then assigns Yoo-Jin to perform a piano duet with Nae-Il. At first, Yoo-Jin insists that Nae-Il follows his instructions, but he soon changes and accepts her way to play the piano.
Yoo-Jin then hears that world-famous conductor Franz Stresemann (Baek Yoon-Sik) will be coming to his university. Yoo-Jin is ecstatic, because he can learn from Franz Stresemann without going to Europe. Yoo-Jin is unaware though that Franz Stresemann dislikes his father and his famous childhood musical instructor Vieira.