[1] A melodrama about a father's love for his children and a forbidden romance between stepsiblings, Piano received high ratings during its airing, as well as acting recognition at the year-end network awards ceremony.

After her husband, a district attorney, dies, she leaves Seoul with her children and moves to Busan, where she opens a piano school.

A few years pass, and all three children, and their sister Joo-hee (played by Kim Hee-jung first, then by Jung Da-hye), are now young adults.

Unbeknownst to Eok-kwan, his biological son Jae-soo (Go Soo) and stepdaughter Soo-ah (Kim Ha-neul) are deeply in love with each other.

After Kyung-ho kills a man attempting to rape Soo-ah, Jae-soo takes the rap and goes to prison in his place, with his spotless record ensuring a short sentence.