What will happen if Kim Jaejoong and his younger brother Kim Junsu who are orphans suddenly get a visit from some strange looking guy saying they are the grandsons of the richest man in whole Asia? And that they have to move in with their grandfather? What troubles await these two brothers and what will Shim Changmin Junsu's best friend do to help them? And who are the three guys that have lived with their grandfather since they were young? What will they do to them?