Park Chan Woo is the head of R&D at a high tech research institute. He returns to Korea to work for a new technology development project through his college friend Jung Hee's referral. When he sees Yoon Su Jin who meets him at the airport, Chan Woo is instantly attracted to her. Despite Jung Hee's repeated overtures, Chan Woo and Su Jin begin to live together. Their living arrangements are contractual with strict respect for each other's privacy and confidentiality. Su Jin boards a plane to Paris but through the underhanded scheme of Jung Hee and her friend Man Su, she ends up stranded on a remote island in Thailand. Chan Woo realizes his love for Su Jin and decides to risk his life to save her.