Mark is deaf and mute, and once his mother passes he is forced to go and live with his rich but disfunctional God-parents and their nightmare of a son, Jaebum in Korea. At first, Jaebum is ashamed of his god-brother and wants nothing to do with him, and Mark feels the same way about Jaebum. But through certain experiences they realize they can use each other for their own good (or bad) reasons.

"I like the fact that I can tell you every single one of my secrets, no matter how ed up they are, and it's like I've never said anything."- Jaebum

"I like the fact that there is someone with a more ed secret up than mine."- Mark