Sunghoon and Stacy have been together for a long time and even though Sunghoon thought he knew everything about her, he actually didn't know a lot about her, at least nothing about 'him' Sunoo her big brother the one who does his best to save his relationship with his sister, But soon Sunoo's past will catches up with him and What makes everything worse is that Sunghoon's heart starts beating like crazy every time he sees that red head.