In 1947, after the death of his parents, young Art was brought into the mansion by his grandfather. Not as a young master but as a future butler. Due to his grandfather vow with the Havellian's family, young Art was tied with the bound to serve the family. He was raised up and trained everyday. One day, he met Heather, the granddaughter of Havellian ll. Their innocence friendship turn into something special to young Art. However, as they grew up, young Art began to realized that they came from two different world.
In 2015, he met Heather Havellian's granddaughter unexpectedly and he began to tell her their bounded love story.